Methods | Statistics | Clinical | Educational | Industrial | Professional items | World psychology |
Conservation status: Domesticated
| File:Mangalarga Marchador.jpg|
| Equus ferus caballus|
48, listed here
The horse (Equus ferus caballus) is a hoofed (ungulate) mammal, a subspecies of one of seven extant species of the family Equidae. The horse has evolved over the past 45 to 55 million years from a small multi-toed creature into the large, single-toed animal of today. Humans began to domesticate horses around 4000 BC, and their domestication is believed to have been widespread by 3000 BC; by 2000 BC the use of domesticated horses had spread throughout the Eurasian continent. Although most horses today are domesticated, there are still endangered populations of the Przewalski's Horse, the only remaining true wild horse, as well as more common feral horses which live in the wild but are descended from domesticated ancestors.
There is an extensive, specialized vocabulary used to describe equine-related concepts, covering everything from anatomy to life stages, size, colors, markings, breeds, locomotion, and behavior. Horses are anatomically designed to use speed to escape predators, and have a well-developed sense of balance and a strong fight-or-flight instinct. Related to this need to flee from predators in the wild is an unusual trait: horses are able to sleep both standing up and lying down. Female horses, called mares, carry their young for approximately 11 months, and a young horse, called a foal, can stand and run shortly following birth. Most domesticated horses begin training under saddle or in harness between the ages of two and four. They reach full adult development by age five, and have an average lifespan of between 25 and 30 years.
Horse breeds are loosely divided into three categories based on general temperament: spirited "hot bloods" with speed and endurance; "cold bloods," such as draft horses and some ponies, suitable for slow, heavy work; and "warmbloods," developed from crosses between hot bloods and cold bloods, often focusing on creating breeds for specific riding purposes, particularly in Europe. There are over 300 breeds of horses in the world today, developed for many different uses.
Horses and humans interact in many ways, not only in a wide variety of sport competitions and non-competitive recreational pursuits, but also in working activities including police work, agriculture, entertainment, assisted learning and therapy. Horses were historically used in warfare. A wide variety of riding and driving techniques have been developed, using many different styles of equipment and methods of control. Many products are derived from horses, including meat, milk, hide, hair, bone, and pharmaceuticals extracted from the urine of pregnant mares. Humans provide domesticated horses with food, water and shelter, as well as attention from specialists such as veterinarians and farriers.
- Main article: Equine anatomy
Horse anatomy is described by a large number of specific terms, as illustrated by the chart to the right. Specific terms also describe various ages, colors and breeds.
Depending on breed, management and environment, the domestic horse today has a life expectancy of 25 to 30 years. It is uncommon, but a few animals live into their 40s and, occasionally, beyond. The oldest verifiable record was "Old Billy," a 19th-century horse that lived to the age of 62. In modern times, Sugar Puff, who had been listed in the Guinness Book of World Records as the world's oldest living pony, died in 2007, aged 56.
Regardless of a horse's actual birth date, for most competition purposes an animal is considered a year older on January 1 of each year in the northern hemisphere and August 1 in the southern hemisphere. The exception is in endurance riding, where the minimum age to compete is based on the animal's calendar age. A very rough estimate of a horse's age can be made from looking at its teeth.
The following terminology is used to describe horses of various ages:
- Foal: a horse of either sex less than one year old. A nursing foal is sometimes called a suckling and a foal that has been weaned is called a weanling. Most domesticated foals are weaned at 5 to 7 months of age, although foals can be weaned at 4 months with no adverse effects.
- Yearling: a horse of either sex that is between one and two years old.
- Colt: a male horse under the age of four. A common terminology error is to call any young horse a "colt," when the term actually only refers to young male horses. [How to reference and link to summary or text]
- Filly: a female horse under the age of four.
- Mare: a female horse four years old and older.
- Stallion: a non-castrated male horse four years old and older. Some people, particularly in the UK, refer to a stallion as a "horse".
- A ridgling or "rig" is a male horse which has an undescended testicle or is improperly castrated. If both testicles are not descended, the horse may appear to be a gelding, but will still behave like a stallion.
- Gelding: a castrated male horse of any age, though for convenience sake, many people also refer to a young gelding under the age of four as a "colt".
In horse racing, the definitions of colt, filly, mare, and stallion may differ from those given above. In the UK, Thoroughbred horse racing defines a colt as a male less than five years old, and a filly as a female less than five years old. In the USA, both Thoroughbred racing and harness racing defines colts and fillies as four years old and younger.
- Main article: Hand (length)
The English-speaking world measures the height of horses in hands, abbreviated "h" or "hh," for "hands high," measured at the highest point of an animal's withers, where the neck meets the back, chosen as a stable point of the anatomy, unlike the head or neck, which move up and down; one hand is 4 inches (Template:Convert/cm)Template:Convert/test/A. Intermediate heights are defined by hands and inches, rounding to the lower measurement in hands, followed by a decimal point and the number of additional inches between 1 and 3. Thus a horse described as "15.2 h," is 15 hands, 2 inches (Template:Convert/LoffAonD/SoffTemplate:Convert/undTemplate:Convert/test/Aon) in height. The size of horses varies by breed, but can also be influenced by nutrition.
The general rule for cutoff in height between what is considered a horse and a pony at maturity is 14.2 hands (Template:Convert/LoffAonD/SoffTemplate:Convert/undTemplate:Convert/test/Aon). An animal 14.2 h or over is usually considered to be a horse and one less than 14.2 h a pony. However, there are exceptions to the general rule. Some breeds which typically produce individuals both under and over 14.2 h are considered horses regardless of their height. Conversely, some pony breeds may have features in common with horses, and individual animals may occasionally mature at over 14.2 h, but are still considered to be ponies.
The distinction between a horse and pony is not simply a difference in height, but takes account of other aspects of phenotype or appearance, such as conformation and temperament. Ponies often exhibit thicker manes, tails and overall coat. They also have proportionally shorter legs, wider barrels, heavier bone, shorter and thicker necks, and short heads with broad foreheads. They often have calmer temperaments than horses and also a high level of equine intelligence that may or may not be used to cooperate with human handlers. In fact, small size, by itself, is sometimes not a factor at all. While the Shetland pony stands on average 10 hands high (Template:Convert/LoffAonD/SoffTemplate:Convert/undTemplate:Convert/test/Aon), the Falabella and other miniature horses, which can be no taller than 30 inches (Template:Convert/cm)Template:Convert/test/A, the size of a medium-sized dog, are classified by their respective registries as very small horses rather than as ponies.
Light riding horses such as Arabians, Morgans, or Quarter Horses usually range in height from 14 to 16 hands (Template:Convert/toTemplate:Convert/undTemplate:Convert/test/Aon) and can weigh from Template:Convert/toTemplate:Convert/test/A. Larger riding horses such as Thoroughbreds, American Saddlebreds or Warmbloods usually start at about 15.2 hands (Template:Convert/LoffAonD/SoffTemplate:Convert/undTemplate:Convert/test/Aon) and often are as tall as 17 hands (Template:Convert/LoffAonD/SoffTemplate:Convert/undTemplate:Convert/test/Aon), weighing from Template:Convert/toTemplate:Convert/test/A. Heavy or draft horses such as the Clydesdale, Belgian, Percheron, and Shire are usually at least 16 to 18 hands (Template:Convert/toTemplate:Convert/undTemplate:Convert/test/Aon) high and can weigh from about Template:Convert/toTemplate:Convert/test/A.
The largest horse in recorded history was probably a Shire horse named Sampson, who lived during the late 1800s. He stood 21.2½ hands high (Template:Convert/LoffAonD/SoffTemplate:Convert/undTemplate:Convert/test/Aon), and his peak weight was estimated at 3,360 pounds (Template:Convert/LoffAonSoff)Template:Convert/test/A. The current record holder for the world's smallest horse is Thumbelina, a fully mature miniature horse affected by dwarfism. She is 17 inches (Template:Convert/cm)Template:Convert/test/A tall and weighs 60 pounds (Template:Convert/LoffAonSoff)Template:Convert/test/A.
Colors and markings
- Main article: Equine coat color
Horses exhibit a diverse array of coat colors and distinctive markings, described with a specialized vocabulary. Often, a horse is classified first by its coat color, before breed or sex. Flashy or unusual colors are sometimes very popular, as are horses with particularly attractive markings. Horses of the same color may be distinguished from one another by their markings.
The genetics that create many horse coat colors have been identified, although research continues on specific genes and mutations that result in specific color traits. Essentially, all horse colors begin with a genetic base of "red" (chestnut) or "black," with the addition of alleles for spotting, graying, suppression or dilution of color, or other effects acting upon the base colors to create the dozens of possible coat colors found in horses.
Horses which are light in color are often misnamed as being "white" horses. A horse that looks pure white is, in most cases, actually a middle-aged or older gray. Grays have black skin underneath their white hair coat (with the exception of small amounts of pink skin under white markings). The only horses properly called white are those with pink skin under a white hair coat, a fairly rare occurrence. There are no truly albino horses, with pink skin and red eyes, as albinism is a lethal condition in horses.
Reproduction and development
- Main article: Horse breeding
Pregnancy lasts for approximately 335–340 days and usually results in one foal. Twins are very rare. Colts are carried on average about 4 days longer than fillies. Horses are a precocial species, and foals are capable of standing and running within a short time following birth.
Horses, particularly colts, may sometimes be physically capable of reproduction at about 18 months. In practice, individuals are rarely allowed to breed before the age of three, especially females. Horses four years old are considered mature, although the skeleton normally continues to develop until the age of six; the precise time of completion of development also depends on the horse's size, breed, gender, and the quality of care provided by its owner. Also, if the horse is larger, its bones are larger; therefore, not only do the bones take longer to actually form bone tissue, but the epiphyseal plates are also larger and take longer to convert from cartilage to bone. These plates convert after the other parts of the bones, but are crucial to development.
Depending on maturity, breed, and the tasks expected, young horses are usually put under saddle and trained to be ridden between the ages of two and four. Although Thoroughbred race horses are put on the track at as young as two years old in some countries, horses specifically bred for sports such as dressage are generally not entered into top-level competition until they are a minimum of four years old, because their bones and muscles are not solidly developed, nor is their advanced training complete. For endurance riding competition, horses are not deemed mature enough to compete until they are a full 60 calendar months (5 years) old.
- Main article: Equine anatomy
- Main article: Skeletal system of the horse
Horses have a skeleton that averages 205 bones. A significant difference between the horse skeleton, compared to that of a human, is the lack of a collarbone—the horse's front limb system is attached to the spinal column by a powerful set of muscles, tendons and ligaments that attach the shoulder blade to the torso. The horse's legs and hooves are also unique structures. Their leg bones are proportioned differently from those of a human. For example, the body part that is called a horse's "knee" is actually made up of the carpal bones that correspond to the human wrist. Similarly, the hock, contains the bones equivalent to those in the human ankle and heel. The lower leg bones of a horse correspond to the bones of the human hand or foot, and the fetlock (incorrectly called the "ankle") is actually the proximal sesamoid bones between the cannon bones (a single equivalent to the human metacarpal or metatarsal bones) and the proximal phalanges, located where one finds the "knuckles" of a human. A horse also has no muscles in its legs below the knees and hocks, only skin, hair, bone, tendons, ligaments, cartilage, and the assorted specialized tissues that make up the hoof.
- Main article: Horse hoof
The critical importance of the feet and legs is summed up by the traditional adage, "no foot, no horse". The horse hoof begins with the distal phalanges, the equivalent of the human fingertip or tip of the toe, surrounded by cartilage and other specialized, blood-rich soft tissues such as the laminae. The exterior hoof wall and horn of the sole is made of essentially the same material as a human fingernail. The end result is that a horse, weighing on average 1,100 pounds (Template:Convert/LoffAonSoff)Template:Convert/test/A, travels on the same bones as a human on tiptoe. For the protection of the hoof under certain conditions, some horses have horseshoes placed on their feet by a professional farrier. The hoof continually grows, and needs to be trimmed (and horseshoes reset, if used) every five to eight weeks.
- Main article: Horse teeth
Horses are adapted to grazing. In an adult horse, there are 12 incisors, adapted to biting off the grass or other vegetation, at the front of the mouth. There are 24 teeth adapted for chewing, the premolars and molars, at the back of the mouth. Stallions and geldings have four additional teeth just behind the incisors, a type of canine teeth that are called "tushes." Some horses, both male and female, will also develop one to four very small vestigial teeth in front of the molars, known as "wolf" teeth, which are generally removed because they can interfere with the bit. There is an empty interdental space between the incisors and the molars where the bit rests directly on the bars (gums) of the horse's mouth when the horse is bridled.
The incisors show a distinct wear and growth pattern as the horse ages, as well as change in the angle at which the chewing surfaces meet. The teeth continue to erupt throughout life as they are worn down by grazing, so a very rough estimate of a horse's age can be made by an examination of its teeth, although diet and veterinary care can affect the rate of tooth wear.
- Main article: Equine anatomy#Digestive system
Horses are herbivores with a digestive system adapted to a forage diet of grasses and other plant material, consumed steadily throughout the day. Therefore, compared to humans, they have a relatively small stomach but very long intestines to facilitate a steady flow of nutrients. A Template:Convert/LoffAoffDbSonTemplate:Convert/test/A horse will eat Template:Convert/toTemplate:Convert/test/A of food per day and, under normal use, drink Template:Convert/USgalTemplate:Convert/test/A to Template:Convert/USgalTemplate:Convert/test/A of water. Horses are not ruminants, so they have only one stomach, like humans, but unlike humans, they can also digest cellulose from grasses due to the presence of a "hind gut" called the cecum, or "water gut," which food goes through before reaching the large intestine. Unlike humans, horses cannot vomit, so digestion problems can quickly cause colic, a leading cause of death.
- See also: Equine vision
The horse's senses are generally superior to those of a human. As prey animals, they must be aware of their surroundings at all times. They have the largest eyes of any land mammal, and because their eyes are positioned on the sides of their heads, horses have a range of vision of more than 350°, with approximately 65° of this being binocular (seen with both eyes) and the remaining 285° monocular (seen with only one eye). Horses have excellent day and night vision, but studies indicate that they have two-color, or dichromatic vision; their color vision is somewhat like red-green color blindness in humans. This means that certain colors, especially red and related colors, appear more green.
Their hearing is good, and the pinna of each ear can rotate up to 180°, giving the potential for 360° hearing without having to move the head. Their sense of smell, while much better than that of humans, is not their strongest asset; they rely to a greater extent on vision.
Horses have a great sense of balance, due partly to their ability to feel their footing and partly to highly developed proprioceptive abilities (the unconscious sense of where the body and limbs are at all times). A horse's sense of touch is well developed. The most sensitive areas are around the eyes, ears and nose. Via touch, horses perceive and respond immediately to changes in their environment, sensing contact as subtle as an insect landing anywhere on the body.
Horses have an advanced sense of taste that allows them to sort through grains and grasses to choose what they would most like to eat, and their prehensile lips can easily sort even the smallest grains. Horses generally will not eat poisonous plants. However, there are exceptions and horses will occasionally eat toxic amounts of poisonous plants even when there is adequate healthy food.
- Main article: Horse gait
All horses move naturally with four basic gaits: the four-beat walk, which averages four miles per hour; the two-beat trot or jog, which averages Template:Convert/toTemplate:Convert/test/A per hour (faster for harness racing horses); and the leaping gaits known as the canter or lope (a three-beat gait that is Template:Convert/toTemplate:Convert/test/A per hour), and the gallop. The gallop averages Template:Convert/toTemplate:Convert/test/A per hour. The world record for a horse galloping over a short, sprint distance is Template:Convert/miTemplate:Convert/test/A per hour. Besides these basic gaits, some horses perform a two-beat pace, instead of the trot. In addition, there are several four-beat "ambling" gaits that are approximately the speed of a trot or pace, though smoother to ride. These include the lateral slow gait, rack, running walk, and tölt as well as the diagonal fox trot. Ambling gaits are often genetic traits in specific breeds, known collectively as gaited horses. In most cases, gaited horses replace the standard trot with one of the ambling gaits.
- Main article: Horse behavior
Horses are prey animals with a well-developed fight-or-flight instinct. Their first response to threat is to startle and usually flee, although they are known to stand their ground and defend themselves or their offspring in cases where flight is not possible, or when their young are threatened. They also tend to be curious; when startled, they will often hesitate an instant to ascertain the cause of their fright, and may not always flee from something that they perceive as non-threatening. Through selective breeding, some breeds of horses are quite docile, particularly certain large draft horses. Most light horse riding breeds were developed for speed, agility, alertness and endurance; natural qualities that extend from their wild ancestors. Horses are herd animals, with a clear hierarchy of rank, led by a dominant animal (usually a mare). They are also social creatures who are able to form companionship attachments to their own species and to other animals, including humans. They communicate in various ways, including vocalizations such as nickering or whinnying, mutual grooming, and body language. Many horses will become difficult to manage if they are isolated. Through proper training, it is possible to teach any horse to accept a human as a type of companion, and thus be comfortable away from other horses. When confined with insufficient companionship, exercise or stimulation, individuals may develop stable vices, an assortment of bad habits, mostly psychological in origin, that include wood chewing, wall kicking, "weaving" (rocking back and forth) and other problems.
Intelligence and learning
In the past, horses were considered unintelligent, with no abstract thinking ability, unable to generalize, and driven primarily by a herd mentality. However, recent studies show that they perform a number of cognitive tasks on a daily basis, and frequently engage in mental challenges that include food procurement and social system identification. They have also been shown to have good spatial discrimination abilities.
Studies have assessed equine intelligence in the realms of problem solving, learning speed, and knowledge retention. Results show that horses excel at simple learning, but also are able to solve advanced cognitive challenges that involve categorization and concept learning. They have been shown to learn from habituation, desensitization, Pavlovian conditioning, and operant conditioning. They respond to and learn from both positive and negative reinforcement.
Domesticated horses tend to face greater mental challenges than wild horses, due to living in artificial environments that stifle instinctual behavior while learning tasks that are not natural. Horses are creatures of habit that respond and adapt well to regimentation, and respond best when the same routines and techniques are used consistently. Some trainers believe that "intelligent" horses are reflections of intelligent trainers who effectively use response conditioning techniques and positive reinforcement to train in the style that fits best with an individual animal's natural inclinations. Others who handle horses regularly note that personality also may play a role separate from intelligence in determining how a given animal responds to various experiences.
- Main article: Draft horse
Horses are mammals, and as such are "warm-blooded" creatures, as opposed to reptiles, which are cold-blooded. However, these words have developed a separate meaning in the context of equine terminology, used to describe temperament, not body temperature. For example, the "hot-bloods," such as many race horses, exhibit more sensitivity and energy, while the "cold-bloods," such as most draft breeds, are quieter and calmer.
"Hot blooded" breeds include "oriental horses" such as the Akhal-Teke, Barb, Arabian horse and now-extinct Turkoman horse, as well as the Thoroughbred, a breed developed in England from the older oriental breeds. Hot bloods tend to be spirited, bold, and learn quickly. They are bred for agility and speed. They tend to be physically refined—thin-skinned, slim, and long-legged. The original oriental breeds were brought to Europe from the Middle East and North Africa when European breeders wished to infuse these traits into racing and light cavalry horses.
Muscular, heavy draft horses are known as "cold bloods," as they are bred not only for strength, but also to have the calm, patient temperament needed to pull a plow or a heavy carriage full of people. They are sometimes nicknamed "gentle giants." Well-known draft breeds include the Belgian and the Clydesdale. Some, like the Percheron are lighter and livelier, developed to pull carriages or to plow large fields in drier climates. Others, such as the Shire, are slower and more powerful, bred to plow fields with heavy, clay-based soils. The cold-blooded group also includes some pony breeds.
"Warmblood" breeds, such as the Trakehner or Hanoverian, developed when European carriage and war horses were crossed with Arabians or Thoroughbreds, producing a riding horse with more refinement than a draft horse, but greater size and more phlegmatic temperament than a lighter breed. Certain pony breeds with warmblood characteristics have been developed for smaller riders.
Today, the term "Warmblood" refers to a specific subset of sport horse breeds that have dominated the Olympic Games and international FEI competition in dressage and show jumping since the 1970s. Prior to that time, the term "warm blood" often referred to any cross between cold-blooded and hot-blooded breeds. Examples included breeds such as the Irish Draught or the Cleveland Bay. Less often, the term was even used to refer to breeds of light riding horse other than Thoroughbreds or Arabians, such as the Morgan horse.
Horses are able to sleep both standing up and lying down. In an adaptation from life in the wild, horses are able to enter light sleep by using a "stay apparatus" in their legs, allowing them to doze without collapsing.  Horses sleep better when in groups because some animals will sleep while others stand guard to watch for predators. A horse kept alone will not sleep well because its instincts are to keep a constant eye out for danger.
Unlike humans, horses do not sleep in a solid, unbroken period of time, but take many short periods of rest. Horses may spend anywhere from four to fifteen hours a day in standing rest, and from a few minutes to several hours lying down. Total sleep time in a day may range from several minutes to a couple of hours, mostly in short intervals of about 15 minutes each.
Horses must lie down to reach REM sleep. They only have to lie down for an hour or two every few days to meet their minimum REM sleep requirements. However, if a horse is never allowed to lie down, after several days it will become sleep-deprived, and in rare cases may suddenly collapse as it involuntarily slips into REM sleep while still standing. This condition differs from narcolepsy, although horses may also suffer from that disorder.
Taxonomy and evolution
- Main article: Evolution of the horse
The horse as it is known today adapted by evolution to survive in areas of wide-open terrain with sparse vegetation, surviving in an ecosystem where other large grazing animals, especially ruminants, could not. Horses and other equids are odd-toed ungulates of the order Perissodactyla, a group of mammals that was dominant during the Tertiary period. In the past, this order contained 14 families and many species, but only three families—Equidae (the horse and related species), the tapir and the rhinoceros—containing 18 known species have survived to the present day. The earliest known member of the Equidae family was the Hyracotherium, which lived between 45 and 55 million years ago, during the Eocene period and had 4 toes on each front foot, and 3 toes on each back foot. The extra toe on the front feet soon disappeared with the Mesohippus, which lived 32 to 37 million years ago, and by about 5 million years ago, the modern Equus had developed. The extra side toes shrank in size until they have vanished in modern horses. All that remains is a set of small vestigial bones on the leg above the hoof, known informally as ergots, chestnuts, or splint bones. Their legs also lengthened as their toes disappeared and until they were a hoofed animal capable of running at great speed.
Over millions of years, equid teeth also evolved from browsing on soft, tropical plants to adapt to browsing of drier plant material, and grazing of tougher plains grasses. Thus the proto-horses changed from leaf-eating forest-dwellers to grass-eating inhabitants of semi-arid regions worldwide, including the steppes of Eurasia and the Great Plains of North America. For reasons not fully understood, Equus caballus disappeared from North America around 10,000 years ago, at the end of the last ice age.
The "Four Foundations" theory
Modern DNA evidence suggests that domesticated horses evolved from multiple wild populations. Specifically, the "Four Foundations" theory suggests that the modern horse evolved from multiple ancient wild prototypes, each adapted to a given habitat. However, an older theory holds that there was only one type of wild horse, the Tarpan subtype, and all other types diverged in form after domestication to meet human needs.
Under the four foundations theory, all types and breeds of horses are thought to have developed from the following base prototypes:Template:Imagequote
Domestication and surviving wild species
- Main article: Domestication of the horse
Competing theories exist as to the time and place of initial domestication. The earliest evidence for the domestication of the horse comes from Ukraine and dates to approximately 4,000 BC. It is thought that the horse was completely domesticated by 3000 BC, and by 2000 BC there was a sharp increase in the number of horse bones found in human settlements in northwestern Europe, indicating the spread of domesticated horses throughout the continent.
Wild species surviving into modern times
- Main article: Wild horse
A truly wild horse is a species or subspecies which has no ancestors that were ever domesticated. Therefore, most "wild" horses today are actually feral horses, animals that escaped or were turned loose from domestic herds and the descendants of those animals.
Only two types of truly wild horses survived into recorded history. One, the Tarpan (Equus ferus ferus) survived into the historical era, but became extinct in 1887. Its pure genetic line was lost, but three attempts have been made to re-create the Tarpan. In the early 1930s, Berlin Zoo Director Lutz Heck and Heinz Heck of the Munich Zoo began a program that by the 1960s produced the Heck horse. In 1936, Polish university professor Tadeusz Vetulani began a program using Konik horses, and in the mid-1960s Harry Hegard started a program in the United States using feral mustangs and local working ranch horses that has resulted in the Hegardt or Stroebel's Horse. None of the breeding programs were completely successful, although all three resulted in horses with many similarities to the Tarpan.
There is only one true wild horse species alive today, the Przewalski's Horse (Equus ferus przewalskii). It is a rare Asian animal, also known as the Mongolian Wild Horse; Mongolian people know it as the taki, and the Kyrgyz people call it a kirtag. Small wild breeding populations of this animal, named after the Russian explorer Nikolai Przhevalsky, exist in Mongolia. There are also small populations maintained at zoos throughout the world. The species was considered extinct in the wild between 1969 and 1992, but a small breeding population was reestablished in the wild due to the conservation efforts of numerous zoos.
- Main article: Feral horse
Feral horses are born and live in the wild, but are descended from domesticated animals. Many populations of feral horses exist throughout the world. Studies of feral herds have provided useful insights into the behavior of prehistoric horses, as well as greater understanding of the instincts and behaviors that drive horses that live in domesticated conditions.
Other modern equids
- Main article: Equidae
Besides the horse, there are seven other species of genus equus in the equidae family. These are the ass or donkey, Equus asinus; the Mountain Zebra, Equus zebra; Plains Zebra, Equus burchelli; Grévy's Zebra, Equus grevyi; the Kiang, Equus kiang; and the Kulan, Equus hemionus, including its subspecies, the Onager, Equus hemionus onager.
Horses can crossbreed with other members of the equus genus. The most common hybrid is the mule, a cross between a "jack" (male donkey) and a mare. A related hybrid, a hinny, is a cross between a stallion and a jenny (female donkey). Other hybrids include the zorse, a cross between a zebra and a horse that is bred in Africa and used for trekking on Mount Kenya. With rare exceptions, most hybrids are sterile and cannot reproduce.
- Main article: List of horse breeds
Horse breeds are groups of horses with distinctive characteristics that are transmitted consistently to their offspring, such as conformation, color, performance ability, or disposition. These inherited traits are usually the result of a combination of natural crosses and artificial selection methods aimed at producing horses for specific tasks. Certain breeds are known for certain talents. For example, Standardbreds are known for their speed in harness racing. Some breeds have been developed through centuries of crossings with other breeds, while others, such as Tennessee Walking Horses and Morgans, developed from a single sire from which all current breed members descend. There are more than 300 horse breeds in the world today.
Origin of breeds
- See also: Domestication of the horse
Modern horse breeds developed in response to a need for "form to function", the necessity to develop certain physical characteristics in order to perform a certain type of work. Thus, powerful but refined breeds such as the Andalusian or the Lusitano developed in the Iberian peninsula as riding horses that also had a great aptitude for dressage, while heavy draft horses such as the Clydesdale and the Shire developed out of a need to perform demanding farm work and pull heavy wagons. Ponies of all breeds originally developed mainly from the need for a working animal that could fulfill specific local draft and transportation needs while surviving in harsh environments. However, by the 20th century, many pony breeds had Arabian and other blood added to make a more refined pony suitable for riding. Other horse breeds developed specifically for light agricultural work, heavy and light carriage and road work, various equestrian disciplines, or simply as pets.
Purebreds and registries
- Main article: Breed registry
Horses have been selectively bred since their domestication. Today, there are over 300 breeds of horses in the world. However, the concept of purebred bloodstock and a controlled, written breed registry only became of significant importance in modern times. Today, the standards for defining and registration of different breeds vary. Sometimes purebred horses are called Thoroughbreds, which is incorrect; "Thoroughbred" is a specific breed of horse, while a "purebred" is a horse (or any other animal) with a defined pedigree recognized by a breed registry.
An early example of people who practiced selective horse breeding were the Bedouin, who had a reputation for careful breeding practices, keeping extensive pedigrees of their Arabian horses and placing great value upon pure bloodlines. Though these pedigrees were originally transmitted via an oral tradition, written pedigrees of Arabian horses can be found that date to the 14th century. In the same period of the early Renaissance, the Carthusian monks of southern Spain bred horses and kept meticulous pedigrees of the best bloodstock; the lineage survives to this day in the Andalusian horse. One of the earliest formal registries was General Stud Book for Thoroughbreds, which began in 1791 and traced back to the Arabian stallions imported to England from the Middle East that became the foundation stallions for the breed.
Some breed registries have a closed stud book, where registration is based on pedigree, and no outside animals can gain admittance. For example, a registered Thoroughbred or Arabian must have two registered parents of the same breed. Other breeds have a partially closed stud book but still allow certain infusions from other breeds. For example, the modern Appaloosa must have at least one Appaloosa parent, but may also have a Quarter Horse, Thoroughbred, or Arabian parent so long as the offspring exhibits appropriate color characteristics. The Quarter Horse normally requires both parents to be registered Quarter Horses, but allows "Appendix" registration of horses with one Thoroughbred parent, and the horse may earn its way to full registration by completing certain performance requirements.
Others, such as most of the warmblood breeds used in sport horse disciplines, have open stud books to varying degrees. While pedigree is considered, outside bloodlines are admitted to the registry if the horses meet the set standard for the registry. These registries usually require a studbook selection process involving judging of an individual animal's quality, performance, and conformation before registration is finalized. A few "registries," particularly some color breed registries, are very open and will allow membership of all horses that meet limited criteria, such as coat color and species, regardless of pedigree or conformation.
Breed registries also differ as to their acceptance or rejection of breeding technology. For example, all Jockey Club Thoroughbred registries require that a registered Thoroughbred be a product of a natural mating, so called "live cover". A foal born of two Thoroughbred parents, but by means of artificial insemination or embryo transfer, cannot be registered in the Thoroughbred studbook. On the other hand, since the advent of DNA testing to verify parentage, most breed registries now allow artificial insemination (AI), embryo transfer (ET), or both. The high value of stallions has helped with the acceptance of these techniques because they allow a stallion to breed more mares with each "collection," and greatly reduce the risk of injury during mating. Cloning of horses is highly controversial, and at the present time most mainstream breed registries will not accept cloned horses, though several cloned horses and mules have been produced.
Interaction with humans
Around the world, horses play a role within human cultures. Horses are used for leisure activities, sports, and working purposes. The Food and Agriculture Organization (FAO) reports that in 2003, China had the largest number of horses in the world with over 8 million, followed by Mexico (6,260,000), Brazil (5,900,500), the United States (5,300,000), and Argentina (3,655,000). The American Horse Council estimates that horse-related activities have a direct impact on the economy of the United States of over $39 billion, and when indirect spending is considered, the impact is over $102 billion. In a 2004 "poll" conducted by Animal Planet, more than 50,000 viewers from 73 countries voted for the horse as the world's 4th favorite animal.
- Main article: Equestrianism
Historically, equestrians honed their skills through competitions, games and races. Equestrian sports have the dual purpose of providing entertainment for crowds and creating and preserving the excellent horsemanship that was needed in battle. Many sports, such as dressage, eventing and show jumping, had origins in military training, which were focused on control and balance in both the horse and the rider. Other sports, such as rodeo, developed from practical skills such as those needed on working ranches. Sport hunting from horseback evolved from earlier practical hunting techniques. Horse racing, whether the horse was ridden or driven, evolved out of impromptu competitions between riders or drivers. The evolving competitions, requiring ever more demanding and specialized skills from both horse and rider, resulted in the systematic development of specialized breeds and equipment for each sport. The popularity of equestrian sports through the centuries has resulted in the preservation of skills that would otherwise have rapidly disappeared after horses stopped being used in combat.
Horses are trained to be ridden or driven in many different sporting events and competitions. Examples include show jumping, dressage, three-day eventing, competitive driving, endurance riding, gymkhana, rodeos and fox hunting. Horse shows, which have their origins in medieval European fairs, are held around the world as venues in which horses are competed, exhibited and sold. They host a huge range of classes, covering all of the mounted and harness disciplines, as well as "In-hand" classes where the horses are led, rather than ridden, to exhibit their conformation. The method of judging classes varies depending on the discipline, but winning awards usually depends on style and ability of both horse and rider. Sports such as polo do not judge the horse itself, but rather use the horse as a partner for human competitors as a necessary part of the game. Although the horse assists this process and requires specialized training to do so, the details of its performance are not judged, only the result of the rider's actions—be it getting a ball through a goal or some other achievement. Examples of these sports of partnership between human and animal also include jousting (reenacting the skills used by medieval knights), in which the main goal is for one rider to unseat the other, and buzkashi, a team game played throughout Central Asia, the aim being to capture a goat carcass while on horseback.
Horse racing is an equestrian sport and also a huge international industry, watched in almost every nation of the world. There are three types: "flat" racing; steeplechasing, i.e. racing over jumps; and harness racing, where horses trot or pace while pulling a driver in a small, light cart known as a sulky. A major part of horse racing's economic importance lies in the gambling associated with it.
Communication between human and horse is paramount in any equestrian activity; to aid this process horses are usually ridden with a saddle on their backs to assist the rider with balance and positioning, and a bridle or related headgear to assist the rider in maintaining control. Sometimes horses are ridden without a saddle, and occasionally, horses are trained to perform without a bridle or other headgear. Many horses are also driven, which requires a harness, bridle and some type of vehicle.
There are certain jobs that horses do very well, and no technology has yet developed that can fully replace them. For example, mounted police horses are still effective for certain types of patrol duties and crowd control. Cattle ranches still require riders on horseback to round up cattle that are scattered across remote, rugged terrain. Search and rescue organizations in some countries depend upon mounted teams to locate people, particularly hikers and children, and to provide disaster relief assistance. Horses can also be used in other areas where it is necessary to avoid vehicular disruption to delicate soil. Examples include areas such as nature reserves. They may also be the only form of transport allowed in wilderness areas. They are also quieter than motorized vehicles. Law enforcement officers such as park rangers or game wardens may use horses for patrols, and horses or mules may also be used for clearing trails or other work in areas of rough terrain where vehicles are less effective.
Some land management practices such as cultivating and logging can be efficiently performed with horses. In agriculture, less use of fossil fuels and increased environmental conservation can be seen over time with the use of draft animals such as horses. In forestry, logging can be done with horses and can result in reduced damage to soil structure and less damage to trees due to more selective logging. Although machinery has replaced horses in many parts of the world, an estimated 100 million horses, donkeys and mules are still used for agriculture and transportation in less developed areas such as Morocco, Kenya and Guatemala.
Entertainment and culture
Modern horses are often used to reenact many of their historical work purposes. Horses are used, complete with equipment that is authentic or a meticulously recreated replica, in various live action historical reenactments of specific periods of history, especially recreations of famous battles. Horses also are used to preserve cultural traditions and for ceremonial purposes. Countries such as the United Kingdom still use horse-drawn carriages to convey royalty and other VIPs to and from certain culturally significant events. Public exhibitions are another example, such as the Budweiser Clydesdales, seen in parades and other public settings, a team of draft horses that pull a beer wagon similar to that used before to the invention of the modern motorized truck.
Horses are frequently used in television and films to add authenticity to historical dramas as well as adding charm to films set in modern-day, or even futuristic science fiction settings. Both live horses and iconic images of horses are used in advertising to promote a variety of products. The horse frequently appears in coats of arms in heraldry. The horse can be represented as standing, trotting, courant (running) or salient (rearing). The horse may be saddled and bridled, harnessed, or without any harness whatsoever. The horse appears in the 12-year cycle of animals in the Chinese zodiac related to the Chinese calendar. According to Chinese folklore, each animal is associated with certain personality traits, and those born in the year of the horse are intelligent, independent and free-spirited.
Assisted learning and therapy
People of all ages with physical and mental disabilities obtain beneficial results from association with horses. Therapeutic riding is used to mentally and physically stimulate disabled persons and help them improve their lives through improved balance and coordination, increased self-confidence and a greater feeling of freedom and independence. The benefits of equestrian activity for people with disabilities has also been recognized with the addition of equestrian events to the Paralympic Games and recognition of para-equestrian events by the FEI. Hippotherapy and therapeutic horseback riding are names for different physical, occupational, and speech therapy treatment strategies that utilize equine movement. In hippotherapy, a therapist uses the horse's movement to provide improve their patient's cognitive, coordination, balance and fine motor skills, whereas therapeutic horseback riding uses specific riding skills.
Horses also provide psychological benefits to people whether they actually ride or not. "Equine-assisted" or "equine-facilitated" psychotherapy is a form of experiential psychotherapy that uses horses as companion animals to assist people with psychological problems, including anxiety disorders, psychotic disorders, mood disorders, behavioral difficulties, mental illness and those who are going through major life changes. Equine Assisted Learning (EAL) (also known as equine guided education or equine assisted professional development) is a field of experiential learning for corporate, professional and personal development. There are also experimental programs using horses in prison settings. Exposure to horses appears to improve the behavior of inmates in a prison setting and help reduce recidivism when they leave.
- Main article: Horses in warfare
Horses in warfare have been seen for most of recorded history. The first archaeological evidence of horses used in warfare dates to between 3000 to 4000 BC, and the use of horses in warfare was widespread by the end of the Bronze Age. Although mechanization has largely replaced the horse as a weapon of war, horses are still seen today in limited military uses, mostly for ceremonial purposes, or for reconnaissance and transport activities in areas of rough terrain where motorized vehicles are ineffective. Horses have been used in the 21st century by the Janjaweed militias in the War in Darfur.
Horses have been used as raw material for many products made by humans throughout history, including byproducts from the slaughter of horses as well as materials collected from living horses.
Products collected from living horses include mare's milk, used by people with large horse herds, such as the Mongols, who let it ferment to produce kumis. Horse blood was once used as food by the Mongols and other nomadic tribes, who found it a convenient source of nutrition when traveling. Drinking their own horses' blood allowed the Mongols to ride for extended periods of time without stopping to eat. Today, the drug Premarin is a mixture of estrogens extracted from the urine of pregnant mares (pregnant mares' urine). It is a widely used drug for hormone replacement therapy. The tail hair of horses can be used for making bows for string instruments such as the violin, viola, cello, and double bass.
Horse meat has been used as food for humans and carnivorous animals throughout the ages. It is eaten in many parts of the world, though consumption is taboo in some cultures. Horsemeat has been an export industry in the United States and other countries, though legislation has periodically been introduced in the United States Congress which would end export from the United States. Horsehide leather has been used for boots, gloves, jackets, baseballs, and baseball gloves. Horse hooves can also be used to produce animal glue. Horse bones can be used to make implements. Specifically, in Italian cuisine, the horse tibia is sharpened into a probe called a spinto, which is used to test the readiness of a (pig) ham as it cures. In Asia, the saba is a horsehide vessel used in the production of kumis.
- Main article: Horse care
Horses are grazing animals, and their major source of nutrients is good-quality forage from hay or pasture. They can consume approximately 2% to 2.5% of their body weight in dry feed each day. Therefore, a Template:Convert/LoffAoffDbSonTemplate:Convert/test/A adult horse could eat up to 25 pounds (Template:Convert/LoffAonSoff)Template:Convert/test/A of food. Sometimes, concentrated feed such as grain is fed in addition to pasture or hay, especially when the animal is very active. When grain is fed, equine nutritionists recommend that 50% or more of the animal's diet by weight should still be forage.
Horses require a plentiful supply of clean water, a minimum of Template:Convert/USgalTemplate:Convert/test/A to Template:Convert/USgalTemplate:Convert/test/A per day. Although horses are adapted to live outside, they require shelter from the wind and precipitation, which can range from a simple shed or shelter to an elaborate stable.
Horses require routine hoof care from a farrier as well as regular vaccinations to protect against various diseases, and periodic dental examinations from a veterinarian or a specialized equine dentist. If horses are kept inside in a barn, they require regular daily exercise for their physical health and mental well-being. When turned outside, they require well-maintained, sturdy fences to be safely contained. Regular grooming is also helpful to help the horse maintain good health of the hair coat and underlying skin.
- ↑ Linnaeus, Carolus (1758). Systema naturae per regna tria naturae :secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis., 10th edition, Holmiae (Laurentii Salvii). URL accessed 2008-09-08.
- ↑ (2005) "Equus caballus" Don E. Wilson & DeeAnn M. Reeder Mammal Species of the World. A Taxonomic and Geographic Reference, 3rd, Johns Hopkins University Press.
- ↑ International Commission on Zoological Nomenclature (2003). Usage of 17 specific names based on wild species which are pre-dated by or contemporary with those based on domestic animals (Lepidoptera, Osteichthyes, Mammalia): conserved. Opinion 2027 (Case 3010).. Bull.Zool.Nomencl. 60 (1): 81-84.
- ↑ The Mane Facts About Horse Health. Horsefacts.org. Foundation for Biomedical Research. URL accessed on 2007-01-22.
- ↑ Ryder, Erin. World's Oldest Living Pony Dies at 56. TheHorse.com. The Horse. URL accessed on 2007-05-31.
- ↑ British Horse Society The Manual of Horsemanship of the British Horse Society p. 255
- ↑ 7.0 7.1 7.2 Ensminger Horses and Horsemanship pp. 46–50
- ↑ (2007). Rules of the Australian Stud Book. (PDF) Australian Jockey Club. URL accessed on 2008-07-09.
- ↑ 9.0 9.1 Age Matters (Your Horse's Age, That Is!). American Endurance Riding Conference. URL accessed on 2008-04-05.
- ↑ 10.0 10.1 10.2 Ensminger Horses and Horsemanship p. 418
- ↑ Giffen, et.al., Horse Owner's Veterinary Handbook, p. 431
- ↑ Ensminger Horses and Horsemanship p. 430
- ↑ Ensminger Horses and Horsemanship p. 415
- ↑ Ensminger Horses and Horsemanship p. 422
- ↑ Ensminger Horses and Horsemanship p. 427
- ↑ Ensminger Horses and Horsemanship p. 420
- ↑ Merriam-Webster's Online Dictionary. Merriam-Webster. URL accessed on 2008-09-25.
- ↑ Delbridge, Arthur & others; The Macquarie Dictionary, p. 1511, The Macquarie Library Pty Ltd, Sydney, 1991, ISBN 0 949757 63 2
- ↑ (2008-08-05)When is a gelding, not a gelding?.
- ↑ Hammond The Language of Horse Racing pp. 49,79
- ↑ Glossary of Horse Racing Terms. Equibase.com. Equibase Company, LLC. URL accessed on 2008-04-03.
- ↑ Ensminger Horses and Horsemanship p. 51
- ↑ 23.0 23.1 Ensminger Horses and Tack pp. 11–12
- ↑ For example, the Missouri Fox Trotter or the Arabian horse. See McBane The Illustrated Encyclopedia of Horse Breeds pp. 192, 218
- ↑ For example, the Welsh Pony. See McBane The Illustrated Encyclopedia of Horse Breeds pp. 52–63
- ↑ Ensminger Horses and Tack p. 12
- ↑ McBane The Illustrated Encyclopedia of Horse Breeds p. 200
- ↑ Damerow, Gail. World's Largest Draft Horse. Rural Heritage Horse Paddock. Rural Heritage. URL accessed on 2008-04-08.
- ↑ Martin, Arthur. Meet Thumbelina, the World's Smallest Horse. Daily Mail. URL accessed on 2006-10-08.
- ↑ Vogel, The Complete Horse Care Manual, p. 14
- ↑ Mills, et. al., A Basic Guide to Horse Care and Management, pp. 72–73
- ↑ Horse Coat Color Tests. Veterinary Genetics Laboratory. University of California. URL accessed on 2008-05-01.
- ↑ Color Information. Equine Color Genetics Information. Equine Color. URL accessed on 2008-05-01.
- ↑ Introduction to Coat Color Genetics. Veterinary Genetics Laboratory. University of California. URL accessed on 2008-05-01.
- ↑ Mau, C., Poncet, P. A., Bucher, B., Stranzinger, G. & Rieder, S.. Genetic mapping of dominant white (W), a homozygous lethal condition in the horse (Equus caballus) (2004). Journal of Animal Breeding and Genetics 121 (6): 374–383.
- ↑ 36.0 36.1 Ensminger Horses and Tack p. 129
- ↑ Johnson, Tom. Rare Twin Foals Born at Vet Hospital: Twin Birth Occurrences Number One in Ten Thousand. Communications Services, Oklahoma State University. Oklahoma State University. URL accessed on 2008-09-23.
- ↑ Hura, V, et al (October 1997). The effect of some factors on gestation length in nonius breed mares in Slovakia (Egyes tényezõk hatása a nóniusz fajta vemhességének idõtartamára). Proceedings of Roundtable Conference on Animal Biotechnology XIII.
- ↑ Miller, '"Revolution, pp. 102–103
- ↑ McIlwraith, C.W.. Developmental Orthopaedic Disease: Problems of Limbs in young Horses. Orthopaedic Research Center. Colorado State University. URL accessed on 2008-04-20.
- ↑ Rolo, Jeffrey. What Age Should I Start My Horse?. AlphaHorse. AlphaHorse. URL accessed on 2008-04-28.
- ↑ 2-Year-Old Racing (US and Canada). Online Fact Book. Jockey Club. URL accessed on 2008-04-28.
- ↑ Crebbin, Tess. The Correct Age and Way to Break a Young Horse. Dressage Connection. Dressage Connection. URL accessed on 2008-04-28.
- ↑ Evans The Horse p. 90
- ↑ Ensminger Horses and Horsemanship pp. 21–25
- ↑ No Hoof, No Horse. Horses & Farm Animals. The Progressive Farmer, Inc.. URL accessed on 2008-04-05.
- ↑ Giffin Horse Owner's Veterinary Handbook p. 304
- ↑ Giffin Horse Owner's Veterinary Handbook p. 457
- ↑ Fuess, Ph.D., Theresa A.. Yes, The Shin Bone Is Connected to the Ankle Bone. Pet Column. University of Illinois. URL accessed on 2008-04-05.
- ↑ Giffin Horse Owner's Veterinary Handbook pp. 310–312
- ↑ Kreling Horses' Teeth and Their Problems pp. 12–13
- ↑ Giffin Horse Owner's Veterinary Handbook p. 175
- ↑ 53.0 53.1 53.2 Ensminger Horses and Horsemanship pp. 309–310
- ↑ Sellnow, Happy Trails, p. 46
- ↑ McDonnell, Sue (June 1, 2007). In Living Color (registration needed).
- ↑ Myers Horse Safe p.7
- ↑ Thomas, Heather Smith. True Horse Sense. Thoroughbred Times. Thoroughbred Times Company. URL accessed on 2008-07-08.
- ↑ Cirelli, Al Jr. and Brenda Cloud. Horse Handling and Riding Guidelines Part 1: Equine Senses. (PDF) Cooperative Extension. University of Nevada. URL accessed on 2008-07-09.
- ↑ Hairston, et. al., The Essentials of Horsekeeping, p. 77
- ↑ Miller, Understanding the Ancient Secrets of the Horse's Mind, p. 28
- ↑ Gustavson, Carrie. Horse Pasture is No Place for Poisonous Plants. Pet Column July 24, 2000. University of Illinois. URL accessed on 2008-07-09.
- ↑ Harris Horse Gaits, Balance and Movement p. 32
- ↑ Harris, Horse Gaits, Balance and Movement p. 47-49
- ↑ About the Horse. First Timers Guide. American Quarter Horse Association. URL accessed on 2008-09-16.
- ↑ Harris Horse Gaits, Balance and Movement p. 50
- ↑ Lieberman, Bobbie (August 2007). Easy Gaited Horses. Equus (Issue 359): 47–51.
- ↑ Equus Staff (August 2007). Breeds that Gait. Equus (Issue 359): 52–54.
- ↑ Harris Horse Gaits, Balance and Movement pp. 50–55
- ↑ McBane A Natural Approach to Horse Management pp. 226–228
- ↑ Ensminger Horses and Horsemanship pp. 305–309
- ↑ Prince Basic Horsemanship pp. 214–223
- ↑ 72.0 72.1 72.2 Hanggi, Evelyn B.. Understanding horse intelligence. Horsetalk 2007. Horsetalk. URL accessed on 2008-09-16.
- ↑ Coarse, Jim. What Big Brown Couldn't Tell You and Mr. Ed Kept to Himself (part 1). The BloodHorse. Blood-Horse Publications. URL accessed on 2008-09-16.
- ↑ Henry All About Horses pp. 59–60, 69–70
- ↑ 75.0 75.1 Henry All About Horses pp. 59–60
- ↑ DeFilippis The Everything Horse Care Book p. 4
- ↑ 77.0 77.1 Henry,All About Horses, pp. 70–75
- ↑ Bennett, Conquerors, p. 7
- ↑ Edwards, The Encyclopedia of the Horse, pp. 122–123
- ↑ Examples are the Australian Riding Pony and the Connemara, see Edwards, The Encyclopedia of the Horse, pp. 178–179, 208-209
- ↑ Henry,All About Horses pp. 77, 83
- ↑ Pascoe, Elaine. How Horses Sleep. Equisearch.com. EquiSearch. URL accessed on 2007-03-23.
- ↑ 83.0 83.1 83.2 Pascoe, Elaine. How Horses Sleep, Pt. 2 - Power Naps. Equisearch.com. EquiSearch. URL accessed on 2007-03-23.
- ↑ Ensminger Horses and Horsemanship p. 310
- ↑ EQUUS Magazine Editors. Equine Sleep Disorder Videos. Equisearch.com. EquiSearch. URL accessed on 2007-03-23.
- ↑ Smith Large Animal Internal Medicine pp. 1086–1087
- ↑ Budiansky The Nature of Horses p. 31
- ↑ Myers, Phil. Order Perissodactyla. Animal Diversity Web. University of Michigan. URL accessed on 2008-07-09.
- ↑ Hyracotherium. Fossil Horses in Cyberspace. Florida Museum of Natural History. URL accessed on 2008-07-09.
- ↑ Mesohippus. Fossil Horses in Cyberspace. Florida Museum of Natural History. URL accessed on 2008-07-09.
- ↑ Equus. Florida Museum of Natural History. URL accessed on 2008-07-09work= Fossil Horses in Cyberspace.
- ↑ 92.0 92.1 The Evolution of Horses. The Horse. American Museum of Natural History. URL accessed on 2008-07-09.
- ↑ Miller, Understanding the Ancient Secrets of the Horse's Mind, p. 20
- ↑ What Is A Horse?. Nature. PBS. URL accessed on 2008-04-03.
- ↑ Briggs, Helen (July 16, 2002). Origins of domestic horse revealed. BBC News Online.
- ↑ Bennett, Conquerors pp. 6–8
- ↑ Edwards, The Arabian, pp 1, 3
- ↑ Bennett, Conquerors, p.7
- ↑ Matossian Shaping World History p. 43
- ↑ Evans Horse Breeding and Management p. 56
- ↑ 101.0 101.1 Olsen, "Horse Hunters of the Ice Age", Horses Through Time, p. 46
- ↑ Equus ferus ferus. Recently Extinct Animals. The Extinction Website. URL accessed on 2008-07-09.
- ↑ Home. The Foundation for the Preservation and Protection of the Przewalski Horse. URL accessed on 2008-04-03.
- ↑ An extraordinary return from the brink of extinction for worlds last wild horse. ZSL Press Releases. Zoological Society of London. URL accessed on 2008-04-29.
- ↑ Edwards, The Encyclopedia of the Horse, p. 291
- ↑ Anthony, "Bridling Horse Power: The Domestication of the Horse", Horses Through Time, pp. 66–67
- ↑ Olsen, Sandra L.. Horses in Prehistory. Anthropology Research. Carnegie Museum of Natural History. URL accessed on 2008-08-16.
- ↑ Dines, "American Mustang Guidebook," pp. 10, 30, 33
- ↑ Genus Equus. Animal Diversity Web. University of Michigan. URL accessed on 2008-07-10.
- ↑ Mule Information. BMS Website. British Mule Society. URL accessed on 2008-07-10.
- ↑ Meet Eclyse - the amazing zebra crossing. Mail Online. Associated Newspapers Ltd. URL accessed on 2008-07-10.
- ↑ Befuddling Birth: The Case of the Mule's Foal. All Things Considered. National Public Radio. URL accessed on 2008-08-16.
- ↑ Hedge Horse Conformation pp. 307–308
- ↑ 114.0 114.1 Sponenberg, "The Proliferation of Horse Breeds", Horses Through Time, p. 155
- ↑ Sponenberg, "The Proliferation of Horse Breeds", Horses Through Time, pp. 156–57
- ↑ Sponenberg, "The Proliferation of Horse Breeds", Horses Through Time, pp. 155, 170-173
- ↑ Sponenberg, "The Proliferation of Horse Breeds", Horses Through Time, p. 162
- ↑ Ensminger Horses and Horsemanship p. 424
- ↑ Edwards The Arabian, pp. 22–23
- ↑ Is Purity the Issue?. WAHO Publication Number 21 January 1998. World Arabian Horse Organization. URL accessed on 2008-04-29.
- ↑ Andalusian. Breeds of Livestock. Oklahoma State University. URL accessed on 2008-04-29.
- ↑ History of Thoroughbreds. Britishhorseracing.com. British Horseracing Authority. URL accessed on 2008-04-03.
- ↑ 123.0 123.1 American Stud Book Principal Rules and Requirements. Jockey Club. URL accessed on 2007-07-05.
- ↑ 2008 Rules & Regulations. 2008 Rulebook. Arabian Horse Association. URL accessed on 2008-04-03.
- ↑ Appaloosa Horse Club Handbook 2007. (PDF) 2007 Rulebook. The Appaloosa Horse Club. URL accessed on 2007-07-05.
- ↑ AQHA Registration Rules and Regulations. (PDF) 2007 Rulebook. American Quarter Horse Association. URL accessed on 2007-07-05.
- ↑ Bernhold, Suzette. What Is A Warmblood Anyway?. Warmblood Whisper. American Warmblood Society. URL accessed on 2008-05-01.
- ↑ Registration and Membership Instructions. Palomino Horse Association. URL accessed on 2008-05-01.
- redirect Template:Cite web
- ↑ McAfee, Melonyce (2007-01-30). Did They Save Barbaro's Semen?. Slate.
- ↑ Mott, Maryann (2006-04-04). Champion Horses Cloned by Texas Breeder. National Geographic News.
- ↑ Global Livestock Production and Health Atlas. GLiPHA. Food and Agriculture Organization of the United Nations. URL accessed on 2007-08-22.
- ↑ Most Comprehensive Horse Study Ever Reveals A Nearly $40 Billion Impact On The U.S. Economy. (PDF) American Horse Council Press Release. American Horse Council. URL accessed on 2005-06-20.
- ↑ Tiger tops dog as world's favourite animal. IOL. Independent Online. URL accessed on 2008-04-03.
- ↑ 135.0 135.1 Olsen, "In the Winner's Circle", Horses Through Time, pp. 105, 111-113, 121
- ↑ Olsen, "In the Winner's Circle", Horses Through Time, p. 105
- ↑ Edwards, The Encyclopedia of the Horse, pp. 346–356, 366-371
- ↑ Edwards, The Encyclopedia of the Horse, pp. 376–377
- ↑ 139.0 139.1 Edwards, The Encyclopedia of the Horse, p. 360
- ↑ Collins, Encyclopedia of Traditional British Rural Sports, pp. 173–174
- ↑ Edwards, The Encyclopedia of the Horse, pp. 332–337
- ↑ Campbell, National Gambling Impact Study Commission Final Report, p. 111
- ↑ Edwards, Horses, pp. 32–34
- ↑ Self, Riding Simplified, p. 55
- ↑ Montag, Molly (2008-07-17). Bridleless, Bareback Reining Queen Stacy Westfall. Cowgirl Living.
- ↑ Mettler, Horse Sense, pp. 47–54
- ↑ Horse Mounted Unit. United States Park Police. National Park Service. URL accessed on 2008-04-07.
- ↑ Edwards, The Encyclopedia of the Horse, pp. 226–227
- ↑ Volunteer Mounted Search and Rescue Unit. Employment. San Benito County Sheriff's Office. URL accessed on 2008-07-08.
- ↑ US Forest Service (2003). Success Stories. (PDF) US Department of Agriculture. URL accessed on 2008-04-20.
- ↑ Gifford, "Working Draught Horses as Singles and Pairs", The Working Horse Manual, p. 85
- ↑ Miller, Work Horse Handbook, p. 13
- ↑ Gifford, "Working Horses in Forestry", The Working Horse Manual, p. 145
- ↑ Saddled with a Big Responsibility. Features. Horsetalk. URL accessed on 2008-07-08.
- ↑ Stoddard, Samuel. Unit Activities. Co H, 4th Virginia Cavalry. Washington Webworks, LLC. URL accessed on 2008-04-29.
- ↑ Carriages. Transport. British Monarchy. URL accessed on 2008-04-29.
- ↑ Busch Gardens. Clydesdales. Animals. Busch Entertainment Corporation. URL accessed on 2008-08-20.
- ↑ Stoddard, Samuel. Horse Movies. At-a-Glance Film Reviews. Rink Works. URL accessed on 2008-04-22.
- ↑ Trademark Horse - Horses as advertising mediums. Westfälische Pferdemuseum. URL accessed on 2008-08-16.
- ↑ Parker, James. A Glossary of Terms Used in Heraldry. Heraldsnet.org. Heraldsnet. URL accessed on 2008-04-03.
- ↑ Year of the Horse. Chinese Culture Center of San Francisco. URL accessed on 2007-07-22.
- ↑ Bush, et.al., The Principles of Teaching Riding, p. 58
- ↑ What Is Para-Equestrian?. Para-Equestrian. Federation Equestre Internationale. URL accessed on 2008-07-08.
- ↑ Frequently Asked Questions About Hippotherapy. (PDF) FAQ - AHA, April 2005. American Hippotherapy Association. URL accessed on 2008-07-08.
- ↑ Equine Facilitated Psychotherapy (EFP) Fact Sheet. Equine Facilitated Mental Health Association. URL accessed on 2008-07-08.
- ↑ The Academy for Chief Executives. Why Talk to a Guru - When You Can Whisper to a Horse. Articles. URL accessed on 2008-07-08.
- ↑ Wise, Mike (2003-08-10). Partners, Horse and Man, in Prison Pasture. New York Times.
- ↑ Newby, Jonica, Jared Diamond and David Anthony. The Horse in History. The Science Show. Radio National. URL accessed on 2008-07-17.
- ↑ Anthony, David W. and Dorcas R. Brown. The Earliest Horseback Riding and its Relation to Chariotry and Warfare. Harnessing Horsepower. Institute for Ancient Equestrian Studies. URL accessed on 2007-10-09.
- ↑ Lacey, Marc. In Sudan, Militiamen on Horses Uproot a Million.
- ↑ 171.0 171.1 Frazier, Ian. Invaders: Destroying Baghdad. The New Yorker.
- ↑ The Facts About Premarin. Issues Facing Equines. The Humane Society of the United States. URL accessed on 2008-04-03.
- ↑ VanClay, Mary. From Horse to Bow. News You Can Use. Johnson String Instrument. URL accessed on 2008-04-03.
- ↑ 174.0 174.1 U.S.D.A. Promotes Horse & Goat Meat. I.G.H.A./HorseAid's U.S.D.A. Report. U.S. Department of Agriculture. URL accessed on 2008-04-03.
- ↑ Coile, Zachary. House votes to outlaw slaughter of horses for human consumption. SF Gate. San Francisco Chronicle. URL accessed on 2008-04-03.
- ↑ Ockerman Animal By-product Processing & Utilization p. 129
- ↑ Inside a Modern Baseball. Baseball Fever. Baseball Almanac. URL accessed on 2008-04-03.
- ↑ Bartlett, Keeping House, pp. 34–35
- ↑ MacGregor Bone, Antler, Ivory and Horn p. 31
- ↑ Fort Eating Up Italy p. 171
- ↑ Hurd, Diseases of the Stomach and Intestines, p. 29
- ↑ Kellon, Eleanor (June 2008). Focus on Feed Costs. Horse Journal Vol. 16, No. 6: 11–12.
- ↑ Hall, Marvin H. and Patricia M. Comerford (1992). Pasture and Hay for Horses - Agronomy Facts 32. (PDF) Cooperative Extension Service. University of Pennsylvania. URL accessed on 2007-02-14.
- ↑ Giffin Horse Owner's Veterinary Handbook pp. 476–477
- ↑ Feeding Factors. Horse Nutrition. Ohio State University. URL accessed on 2007-02-09.
- ↑ Giffin Horse Owner's Veterinary Handbook p. 455
- ↑ Giffin Horse Owner's Veterinary Handbook p. 482
- ↑ Giffin Horse Owner's Veterinary Handbook p. 62,168,310
- ↑ General Horse Care Guidelines. Horses: Companions for Life. Humane Society of the United States. URL accessed on 2008-04-22.
- ↑ Wheeler Horse Stable and Riding Arena Design p. 215
- ↑ Giffin Horse Owner's Veterinary Handbook p. 90
- Crawley, J., & Chamove, A. S. (1997). Thoroughbred race horse behavioural responses to human contact. Wellington, New Zealand: New Zealand Psychological Society
- Doniger, W. (2006). A symbol in search of an object: The mythology of horses in India. New York, NY: Columbia University Press.
- Goodrich, C. A. (1835). Section III. On the breeding, rearing and management of horses. Ct: T Belknap.
- Schowalter, J. E. (2005). Horses and horsewomen. Madison, CT: International Universities Press, Inc.
- Aganga, A. A., & Tsopito, C. M. (1998). A note on the feeding behaviour of domestic donkeys: A Botswana case study: Applied Animal Behaviour Science Vol 60(2-3) Nov 1998, 235-239.
- Asa, C. S. (1999). Male reproductive success in free-ranging feral horses: Behavioral Ecology and Sociobiology Vol 47(1-2) Dec 1999, 89-93.
- Austin, N. P., & Rogers, L. J. (2007). Asymmetry of flight and escape turning responses in horses: Laterality: Asymmetries of Body, Brain and Cognition Vol 12(5) Sep 2007, 464-474.
- Autio, E., & Heiskanen, M. L. (2005). Foal behaviour in a loose housing/paddock environment during winter: Applied Animal Behaviour Science Vol 91(3-4) Jun 2005, 277-288.
- Bachmann, I., Bernasconi, P., Herrmann, R., Weishaupt, M. A., & Stauffacher, M. (2003). Behavioural and physiological responses to an acute stressor in crib-biting and control horses: Applied Animal Behaviour Science Vol 82(4) Aug 2003, 297-311.
- Bankoff, G. (2004). Bestia incognita: The horse and its history in the Philippines 1880-1930: Anthrozoos Vol 17(1) 2004, 3-25.
- Benhajali, H., Richard-Yris, M.-A., Leroux, M., Ezzaouia, M., Charfi, F., & Hausberger, M. (2008). A note on the time budget and social behaviour of densely housed horses: Applied Animal Behaviour Science Vol 112(1-2) Jul 2008, 196-200.
- Birke, L. (2007). "Learning to speak horse": The culture of "natural horsemanship." Society & Animals Vol 15(3) 2007, 217-239.
- Blackmore, T. L., Foster, T. M., Sumpter, C. E., & Temple, W. (2008). An investigation of colour discrimination with horses (Equus caballus): Behavioural Processes Vol 78(3) Jul 2008, 387-396.
- Bourjade, M., Moulinot, M., Henry, S., Richard-Yris, M.-A., & Hausberger, M. (2008). Could adults be used to improve social skills of young horses, Equus caballus? : Developmental Psychobiology Vol 50(4) May 2008, 408-417.
- Boyd, L. (1998). The 24-h time budget of a takh harem stallion (Equus ferus przewalskii) pre- and post-reintroduction: Applied Animal Behaviour Science Vol 60(4) Nov 1998, 291-299.
- Brandt, K. (2004). A Language of Their Own: An Interactionist Approach to Human-Horse Communication: Society & Animals Vol 12(4) 2004, 299-316.
- Cameron, E. Z., & Linklater, W. L. (2000). Individual mares bias investment in sons and daughters in relation to their condition: Animal Behaviour Vol 60(3) Sep 2000, 359-367.
- Canacoo, E. A., & Avornyo, F. K. (1998). Daytime activities of donkeys at range in the coastal savanna of Ghana: Applied Animal Behaviour Science Vol 60(2-3) Nov 1998, 229-234.
- Chaya, L., Cowan, E., & McGuire, B. (2006). A note on the relationship between time spent in turnout and behaviour during turnout in horses (Equus caballus): Applied Animal Behaviour Science Vol 98(1-2) Jun 2006, 155-160.
- Christensen, J. W., Keeling, L. J., & Nielsen, B. L. (2005). Responses of horses to novel visual, olfactory and auditory stimuli: Applied Animal Behaviour Science Vol 93(1-2) Sep 2005, 53-65.
- Christensen, J. W., & Rundgren, M. (2008). Predator odour per se does not frighten domestic horses: Applied Animal Behaviour Science Vol 112(1-2) Jul 2008, 136-145.
- Christensen, J. W., Zharkikh, T., & Ladewig, J. (2008). Do horses generalise between objects during habituation? : Applied Animal Behaviour Science Vol 114(3-4) Dec 2008, 509-520.
- Christensen, J. W., Zharkikh, T., Ladewig, J., & Yasinetskaya, N. (2002). Social behaviour in stallion groups (Equus przewalskii and Equus caballus) kept under natural and domestic conditions: Applied Animal Behaviour Science Vol 76(1) Feb 2002, 11-20.
- Christian, J. E. (2005). All Creatures Great and Small: Utilizing Equine-Assisted Therapy to Treat Eating Disorders: Journal of Psychology and Christianity Vol 24(1) Spr 2005, 65-67.
- Clegg, H. A., Buckley, P., Friend, M. A., & McGreevy, P. D. (2008). The ethological and physiological characteristics of cribbing and weaving horses: Applied Animal Behaviour Science Vol 109(1) Jan 2008, 68-76.
- Cooper, J. J. (2007). Equine learning behaviour: Common knowledge and systematic research: Behavioural Processes Vol 76(1) Sep 2007, 24-26.
- Cooper, J. J., McAll, N., Johnson, S., & Davidson, H. P. B. (2005). The short-term effects of increasing meal frequency on stereotypic behaviour of stabled horses: Applied Animal Behaviour Science Vol 90(3-4) Mar 2005, 351-364.
- Cosslett, T. (2008). Review of Victorian fiction and the cult of the horse: Anthrozoos Vol 21(2) Jun 2008, 203-204.
- Creighton, E. (2007). Equine learning behaviour: Limits of ability and ability limits of trainers: Behavioural Processes Vol 76(1) Sep 2007, 43-44.
- Crowell-Davis, S. L. (2007). Sexual behavior of mares: Hormones and Behavior Vol 52(1) Jun 2007, 12-17.
- Cumella, E. J. (2005). Equine Therapy: A Colt Yearning to Be a Stallion: PsycCRITIQUES Vol 50 (33), 2005.
- Des Roches, A. D. B., Richard-Yris, M.-A., Henry, S., Ezzaouia, M., & Hausberger, M. (2008). Laterality and emotions: Visual laterality in the domestic horse (Equus caballus) differs with objects' emotional value: Physiology & Behavior Vol 94(3) Jun 2008, 487-490.
- Dodman, N. H., Wrubel, K. M., & Cottam, N. (2008). Effect of a synthetic equine maternal pheromone during a controlled fear-eliciting situation: A critique on Falewee (2006): Applied Animal Behaviour Science Vol 109(1) Jan 2008, 85-87.
- Doniger, W. (2006). A symbol in search of an object: The mythology of horses in India. New York, NY: Columbia University Press.
- Ewing, C. A., MacDonald, P. M., Taylor, M., & Bowers, M. J. (2007). Equine-facilitated learning for youths with severe emotional disorders: A quantitative and qualitative study: Child & Youth Care Forum Vol 36(1) Feb 2007, 59-72.
- Falewee, C., Gaultier, E., Lafont, C., Bougrat, L., & Pageat, P. (2006). Effect of a synthetic equine maternal pheromone during a controlled fear-eliciting situation: Applied Animal Behaviour Science Vol 101(1-2) Dec 2006, 144-153.
- Farias-Tomaszewski, S., Jenkins, S. R., & Keller, J. (2001). An evaluation of therapeutic horseback riding programs for adults with physical impairments: Therapeutic Recreation Journal Vol 35(3) 2001, 250-257.
- Ferguson, D. L., & Rosales-Ruiz, J. (2001). Loading the problem loader: The effects of target training and shaping on trailer-loading behavior of horses: Journal of Applied Behavior Analysis Vol 34(4) Win 2001, 409-423.
- Fleurance, G., Duncan, P., Fritz, H., Cabaret, J., Cortet, J., & Gordon, I. J. (2007). Selection of feeding sites by horses at pasture: Testing the anti-parasite theory: Applied Animal Behaviour Science Vol 108(3-4) Dec 2007, 288-301.
- French, J. M. (1998). Mother-offspring relationships in donkeys: Applied Animal Behaviour Science Vol 60(2-3) Nov 1998, 253-258.
- Gardner, L. P. (1933). The responses of horses to the situation of a closed feed box: Journal of Comparative Psychology Vol 15(3) Jun 1933, 445-467.
- Gardner, L. P. (1937). The responses of horses in a discrimination problem: Journal of Comparative Psychology Vol 23(1) Feb 1937, 13-34.
- Gardner, L. P. (1937). Responses of horses to the same signal in different positions: Journal of Comparative Psychology Vol 23(2) Apr 1937, 305-332.
- Gardner, L. P. (1942). Conditioning horses and cows to the pail as a signal: Journal of Comparative Psychology Vol 34(1) Aug 1942, 29-41.
- Goodwin, D. (2007). Equine learning behaviour: What we know, what we don't and future research priorities: Behavioural Processes Vol 76(1) Sep 2007, 17-19.
- Goodwin, D., Davidson, H. P. B., & Harris, P. (2005). Selection and acceptance of flavours in concentrate diets for stabled horses: Applied Animal Behaviour Science Vol 95(3-4) Dec 2005, 223-232.
- Goodwin, D., Davidson, H. P. B., & Harris, P. (2005). Sensory varieties in concentrate diets for stabled horses: Effects on behaviour and selection: Applied Animal Behaviour Science Vol 90(3-4) Mar 2005, 337-349.
- Gough, M. R. (1999). A note on the use of behavioural modification to aid clipping ponies: Applied Animal Behaviour Science Vol 63(2) Apr 1999, 171-175.
- Hada, T., Onaka, T., Takahashi, T., Hiraga, A., & Yagi, K. (2003). Effects of Novelty Stress on Neuroendocrine Activities and Running Performance in Thoroughbred Horses: Journal of Neuroendocrinology Vol 15(7) Jul 2003, 638-648.
- Hall, C. (2007). The impact of visual perception on equine learning: Behavioural Processes Vol 76(1) Sep 2007, 29-33.
- Hall, C. A., & Cassaday, H. J. (2006). An investigation into the effect of floor colour on the behaviour of the horse: Applied Animal Behaviour Science Vol 99(3-4) Sep 2006, 301-314.
- Hanggi, E. B. (2003). Discrimination learning based on relative size concepts in horses (Equus caballus): Applied Animal Behaviour Science Vol 83(3) Sep 2003, 201-213.
- Hanggi, E. B., Ingersoll, J. F., & Waggoner, T. L. (2007). Color vision in horses (Equus caballus): Deficiencies identified using a pseudoisochromatic plate test: Journal of Comparative Psychology Vol 121(1) Feb 2007, 65-72.
- Hausberger, M., Bruderer, C., Le Scolan, N., & Pierre, J.-S. (2004). Interplay Between Environmental and Genetic Factors in Temperament/Personality Traits in Horses (Equus caballus): Journal of Comparative Psychology Vol 118(4) Dec 2004, 434-446.
- Hausberger, M., Gautier, E., Muller, C., & Jego, P. (2007). Lower learning abilities in stereotypic horses: Applied Animal Behaviour Science Vol 107(3-4) Nov 2007, 299-306.
- Hausberger, M., & Muller, C. (2002). A brief note on some possible factors involved in the reactions of horses to humans: Applied Animal Behaviour Science Vol 76(4) Apr 2002, 339-344.
- Hausberger, M., Roche, H., Henry, S., & Visser, E. K. (2008). Introduction: Applied Animal Behaviour Science Vol 109(1) Jan 2008, 1-24.
- Heitor, F., Oom, M. d. M., & Vicente, L. (2006). Social relationships in a herd of Sorraia horses. Part I. Correlates of social dominance and contexts of aggression: Behavioural Processes Vol 73(2) Sep 2006, 170-177.
- Heitor, F., & Vicente, L. (2007). Learning about horses: What is equine learning all about? : Behavioural Processes Vol 76(1) Sep 2007, 34-36.
- Hemmings, A., McBride, S. D., & Hale, C. E. (2007). Perseverative responding and the aetiology of equine oral stereotypy: Applied Animal Behaviour Science Vol 104(1-2) Apr 2007, 143-150.
- Henderson, A. J. Z. (2007). Don't fence me in: Managing psychological well being for elite performance horses: Journal of Applied Animal Welfare Science Vol 10(4) 2007, 309-329.
- Henry, M., Lodi, L. D., & Gastal, M. M. F. O. (1998). Sexual behaviour of domesticated donkeys (Equus asinus) breeding under controlled or free range management systems: Applied Animal Behaviour Science Vol 60(2-3) Nov 1998, 263-276.
- Henry, S., Briefer, S., Richard-Yris, M. A., & Hausberger, M. (2007). Are 6-month-old foals sensitive to dam's influence? : Developmental Psychobiology Vol 49(5) Jul 2007, 514-521.
- Henry, S., Richard-Yris, M. A., & Hausberger, M. (2006). Influence of Various Early Human-Foal Interferences on Subsequent Human-Foal Relationship: Developmental Psychobiology Vol 48(8) Dec 2006, 712-718.
- Honda, A., & Yamazaki, K. (2006). Effects of horseback riding and contact with horses on mood change and heart rate: Japanese Journal of Health Psychology Vol 19(1) 2006, 48-55.
- Hothersall, B., & Nicol, C. (2007). Equine learning behaviour: Accounting for ecological constraints and relationships with humans in experimental design: Behavioural Processes Vol 76(1) Sep 2007, 45-48.
- Houpt, K., Houpt, T. R., Johnson, J. L., Erb, H. N., & Yeon, S. C. (2001). The effect of exercise deprivation on the behaviour and physiology of straight stall confined pregnant mares: Animal Welfare Vol 10(3) Aug 2001, 257-267.
- Houpt, K. A. (2004). Review of Horse Behaviour: Applied Animal Behaviour Science Vol 89(1-2) Nov 2004, 181-182.
- Houpt, K. A. (2007). Imprinting training and conditioned taste aversion: Behavioural Processes Vol 76(1) Sep 2007, 14-16.
- Houpt, K. A., & Antczak, D. (1998). Abnormal maternal behavior in a donkey as a consequence of neophobia: Applied Animal Behaviour Science Vol 60(2-3) Nov 1998, 259-262.
- Houpt, K. A., & Rudman, R. (2002). Foreword to special issue on equine behavior: Editorial: Applied Animal Behaviour Science Vol 78(2-4) Sep 2002, 83-85.
- Hurn, S. (2008). What's love got to do with it? The interplay of sex and gender in the commercial breeding of Welsh Cobs: Society & Animals Vol 16(1) 2008, 23-44.
- Iacono, C. M., Friend, T. H., Johnson, R. D., Krawczel, P. D., & Archer, G. S. (2007). A preliminary study on the utilization of an onboard watering system by horses during commercial transport: Applied Animal Behaviour Science Vol 105(1-3) Jun 2007, 227-231.
- Ingolfsdottir, H. B., & Sigurjonsdottir, H. (2008). The benefits of high rank in the wintertime--A study of the Icelandic horse: Applied Animal Behaviour Science Vol 114(3-4) Dec 2008, 485-491.
- Itkovic, Z., & Boras, S. (2003). Therapeutic Horseback Riding and Rehabilitation Sciences: Hrvatska Revija Za Rehabilitacijska Istrazivanja Vol 39(1) 2003, 73-82.
- Jezierski, T., Jaworski, Z., & Gorecka, A. (1999). Effects of handling on behaviour and heart rate in Konik horses: Comparison of stable and forest reared youngstock: Applied Animal Behaviour Science Vol 62(1) Feb 1999, 1-11.
- Jorgensen, G. H. M., & Boe, K. E. (2007). A note on the effect of daily exercise and paddock size on the behaviour of domestic horses (Equus caballus): Applied Animal Behaviour Science Vol 107(1-2) Oct 2007, 166-173.
- Karol, J. (2007). Applying a traditional individual psychotherapy model to equine-facilitated psychotherapy (EFP): Theory and method: Clinical Child Psychology and Psychiatry Vol 12(1) Jan 2007, 77-90.
- Kay, R., & Hall, C. (2009). The use of a mirror reduces isolation stress in horses being transported by trailer: Applied Animal Behaviour Science Vol 116(2-4) Jan 2009, 237-243.
- Khalil, A. M., & Kaseda, Y. (1998). Early experience affects developmental behaviour and timing of harem formation in Misaki horses: Applied Animal Behaviour Science Vol 59(4) Sep 1998, 253-263.
- Khalil, A. M., & Murakami, N. (1999). Effect of natal dispersal on the reproductive strategies of the young Misaki feral stallions: Applied Animal Behaviour Science Vol 62(4) Feb 1999, 281-291.
- Kim, Y.-K., Noh, K.-B., Han, C.-S., Moon, J.-Y., Yoon, D.-K., Song, K.-J., et al. (2006). No borna disease virus-specific RNA detected in blood of race horses and jockeys: Acta Neuropsychiatrica Vol 18(3-4) Jun-Aug 2006, 177-180.
- Kimura, R. (1998). Mutual grooming and preferred associate relationships in a band of free-ranging horses: Applied Animal Behaviour Science Vol 59(4) Sep 1998, 265-276.
- Klingel, H. (1998). Observations on social organization and behaviour of African and Asiatic Wild Asses (Equus africanus and Equus hemionus): Applied Animal Behaviour Science Vol 60(2-3) Nov 1998, 103-114.
- Krueger, K. (2007). Behaviour of horses in the "round pen technique": Applied Animal Behaviour Science Vol 104(1-2) Apr 2007, 162-170.
- Krueger, K., & Flauger, B. (2007). Social learning in horses from a novel perspective: Behavioural Processes Vol 76(1) Sep 2007, 37-39.
- Krueger, K., & Heinze, J. (2008). Horse sense: Social status of horses (Equus caballus) affects their likelihood of copying other horses' behavior: Animal Cognition Vol 11(3) Jul 2008, 431-439.
- Kruger, K., & Flauger, B. (2008). Social feeding decisions in horses (Equus caballus): Behavioural Processes Vol 78(1) May 2008, 76-83.
- Ladewig, J. (2007). Clever Hans is still whinnying with us: Behavioural Processes Vol 76(1) Sep 2007, 20-21.
- Lamoot, I., Callebaut, J., Degezelle, T., Demeulenaere, E., Laquiere, J., Vandenberghe, C., et al. (2004). Eliminative behaviour of free-ranging horses: Do they show latrine behaviour or do they defecate where they graze? : Applied Animal Behaviour Science Vol 86(1-2) May 2004, 105-121.
- Lansade, L., Bertrand, M., Boivin, X., & Bouissou, M.-F. (2004). Effects of handling at weaning on manageability and reactivity of foals: Applied Animal Behaviour Science Vol 87(1-2) Jul 2004, 131-149.
- Lansade, L., Bertrand, M., & Bouissou, M.-F. (2005). Effects of neonatal handling on subsequent manageability, reactivity and learning ability of foals: Applied Animal Behaviour Science Vol 92(1-2) Jul 2005, 143-158.
- Lansade, L., & Bouissou, M.-F. (2008). Reactivity to humans: A temperament trait of horses which is stable across time and situations: Applied Animal Behaviour Science Vol 114(3-4) Dec 2008, 492-508.
- Lansade, L., Bouissou, M. F., & Boivin, X. (2007). Temperament in preweanling horses: Development of reactions to humans and novelty, and startle responses: Developmental Psychobiology Vol 49(5) Jul 2007, 501-513.
- Lansade, L., Bouissou, M.-F., & Erhard, H. W. (2008). Reactivity to isolation and association with conspecifics: A temperament trait stable across time and situations: Applied Animal Behaviour Science Vol 109(2-4) Feb 2008, 355-373.
- Lansade, L., Pichard, G., & Leconte, M. (2008). Sensory sensitivities: Components of a horse's temperament dimension: Applied Animal Behaviour Science Vol 114(3-4) Dec 2008, 534-553.
- Larose, C., Richard-Yris, M.-A., Hausberger, M., & Rogers, L. J. (2006). Laterality of horses associated with emotionality in novel situations: Laterality: Asymmetries of Body, Brain and Cognition Vol 11(4) Jul 2006, 355-367.
- Leblanc, M.-A., & Duncan, P. (2007). Can studies of cognitive abilities and of life in the wild really help us to understand equine learning? : Behavioural Processes Vol 76(1) Sep 2007, 49-52.
- Leeb, C. (2004). Review of The Welfare of Horses: Anthrozoos Vol 17(3) 2004, 273-276.
- Lehmann, K., Kallweit, E., & Ellendorff, F. (2006). Social hierarchy in exercised and untrained group-housed horses--A brief report: Applied Animal Behaviour Science Vol 96(3-4) Feb 2006, 343-347.
- Ligout, S., Bouissou, M.-F., & Boivin, X. (2008). Comparison of the effects of two different handling methods on the subsequent behaviour of Anglo-Arabian foals toward humans and handling: Applied Animal Behaviour Science Vol 113(1-3) Sep 2008, 175-188.
- Lindberg, A. C., Kelland, A., & Nicol, C. J. (1999). Effects of observational learning on acquisition of an operant response in horses: Applied Animal Behaviour Science Vol 61(3) Jan 1999, 187-199.
- Linklater, W. L. (2007). Equine learning in a wider context--Opportunities for integrative pluralism: Behavioural Processes Vol 76(1) Sep 2007, 53-56.
- Lloyd, A. S., Martin, J. E., Bornett-Gauci, H. L. I., & Wilkinson, R. G. (2008). Horse personality: Variation between breeds: Applied Animal Behaviour Science Vol 112(3-4) Aug 2008, 369-383.
- Lykken, D. T. (1966). Black cats, red herrings, and horses of another color: Psychological Reports 18(2) 1966, 621-622.
- Maciejewski, F. (2003). A "thick description" of Little Hans. On the forgotten trauma of circumcision: Psyche: Zeitschrift fur Psychoanalyse und ihre Anwendungen Vol 57(6) Jun 2003, 523-550.
- Malmkvist, J., & Christensen, J. W. (2007). A note on the effects of a commercial tryptophan product on horse reactivity: Applied Animal Behaviour Science Vol 107(3-4) Nov 2007, 361-366.
- Maros, K., Gacsi, M., & Miklosi, A. (2008). Comprehension of human pointing gestures in horses (Equus caballus): Animal Cognition Vol 11(3) Jul 2008, 457-466.
- Martin, T. l., Zentall, T. R., & Lawrence, L. (2006). Simple discrimination reversals in the domestic horse (Equus caballus): Effect of discriminative stimulus modality on learning to learn: Applied Animal Behaviour Science Vol 101(3-4) Dec 2006, 328-338.
- Mathison, J., & Tosey, P. (2008). Riding into transformative learning: Journal of Consciousness Studies Vol 15(2) Feb 2008, 67-88.
- McCall, C. A. (2007). Making equine learning research applicable to training procedures: Behavioural Processes Vol 76(1) Sep 2007, 27-28.
- McCall, C. A., Hall, S., McElhenney, W. H., & Cummins, K. A. (2006). Evaluation and comparison of four methods of ranking horses based on reactivity: Applied Animal Behaviour Science Vol 96(1-2) Jan 2006, 115-127.
- McCall, C. A., Salters, M. A., Johnson, K. B., Silverman, S. J., McElhenney, W. H., & Lishak, R. S. (2003). Equine utilization of a previously learned visual stimulus to solve a novel task: Applied Animal Behaviour Science Vol 82(3) Jul 2003, 163-172.
- McDonnell, S. M. (1998). Reproductive behavior of donkeys (Equus asinus): Applied Animal Behaviour Science Vol 60(2-3) Nov 1998, 277-282.
- McGee, S., & Smith, H. V. (2004). Accompanying pre-weaned thoroughbred (Equus caballus) foals while separated from the mare during covering reduces behavioural signs of distress exhibited: Applied Animal Behaviour Science Vol 88(1-2) Sep 2004, 137-147.
- McGreevey, P. D., Hawson, L. A., Habermann, T. C., & Cattle, S. R. (2001). Geophagia in horses: A short note on 13 cases: Applied Animal Behaviour Science Vol 71(2) Feb 2001, 119-125.
- McGreevy, P. D., Landrieu, J. P., & Malou, P. F. J. (2007). A note on motor laterality in plains zebras (Equus burchellii) and impalas (Aepyceros melampus): Laterality: Asymmetries of Body, Brain and Cognition Vol 12(5) Sep 2007, 449-457.
- McGreevy, P. D., & Rogers, L. J. (2005). Motor and sensory laterality in thoroughbred horses: Applied Animal Behaviour Science Vol 92(4) Aug 2005, 337-352.
- McGreevy, P. D., & Thomson, P. C. (2006). Differences in motor laterality between breeds of performance horse: Applied Animal Behaviour Science Vol 99(1-2) Aug 2006, 183-190.
- McGrogan, C., Hutchison, M. D., & King, J. E. (2008). Dimensions of horse personality based on owner and trainer supplied personality traits: Applied Animal Behaviour Science Vol 113(1-3) Sep 2008, 206-214.
- McLean, A. N. (2004). Short-term spatial memory in the domestic horse: Applied Animal Behaviour Science Vol 85(1-2) Jan 2004, 93-105.
- McLean, A. N. (2005). The positive aspects of correct negative reinforcement: Anthrozoos Vol 18(3) 2005, 245-254.
- Mills, D. S., & Riezebos, M. (2005). The role of the image of a conspecific in the regulation of stereotypic head movements in the horse: Applied Animal Behaviour Science Vol 91(1-2) May 2005, 155-165.
- Minero, M., Zucca, D., & Canali, E. (2006). A note on reaction to novel stimulus and restraint by therapeutic riding horses: Applied Animal Behaviour Science Vol 97(2-4) May 2006, 335-342.
- Miyashita, Y., Nakajima, S., & Imada, H. (2000). Differential outcome effect in the horse: Journal of the Experimental Analysis of Behavior Vol 74(2) Sep 2000, 245-254.
- Moehlman, P. D. (1998). Behavioral patterns and communication in feral asses (Equus africanus): Applied Animal Behaviour Science Vol 60(2-3) Nov 1998, 125-169.
- Moehlman, P. D. (1998). Feral asses (Equus africanus): Intraspecific variation in social organization in arid and mesic habitats: Applied Animal Behaviour Science Vol 60(2-3) Nov 1998, 171-195.
- Moehlman, P. D., Fowler, L. E., & Roe, J. H. (1998). Feral asses (Equus africanus) of Volcano Alcedo, Galapagos: Behavioral ecology, spatial distribution, and social organization: Applied Animal Behaviour Science Vol 60(2-3) Nov 1998, 197-210.
- Momozawa, Y., Kusunose, R., Kikusui, T., Takeuchi, Y., & Mori, Y. (2005). Assessment of equine temperament questionnaire by comparing factor structure between two separate surveys: Applied Animal Behaviour Science Vol 92(1-2) Jul 2005, 77-84.
- Morris, P. H., Gale, A., & Duffy, K. (2002). Can judges agree on the personality of horses? : Personality and Individual Differences Vol 33(1) Jul 2002, 67-81.
- Morris, P. H., Gale, A., & Howe, S. (2002). The factor structure of horse personality: Anthrozoos Vol 15(4) 2002, 300-322.
- Motch, S. M., Harpster, H. W., Ralston, S., Ostiguy, N., & Diehl, N. K. (2007). A note on yearling horse ingestive and agonistic behaviours in three concentrate feeding systems: Applied Animal Behaviour Science Vol 106(1-3) Aug 2007, 167-172.
- Mueller, P. J., Protos, P., Houpt, K. A., & Van Soest, P. J. (1998). Chewing behaviour in the domestic donkey (Equus asinus) fed fibrous forage: Applied Animal Behaviour Science Vol 60(2-3) Nov 1998, 241-251.
- Murphy, J., & Arkins, S. (2007). Equine learning behaviour: Behavioural Processes Vol 76(1) Sep 2007, 1-13.
- Murphy, J., & Arkins, S. (2007). Synthesizing what we know of equine learning behaviour: Behavioural Processes Vol 76(1) Sep 2007, 57-60.
- Murphy, J., & Arkins, S. (2008). Facial hair whorls (trichoglyphs) and the incidence of motor laterality in the horse: Behavioural Processes Vol 79(1) Sep 2008, 7-12.
- Murphy, J., Sutherland, A., & Arkins, S. (2005). Idiosyncratic motor laterality in the horse: Applied Animal Behaviour Science Vol 91(3-4) Jun 2005, 297-310.
- Murphy, J., Waldmann, T., & Arkins, S. (2004). Sex differences in equine learning skills and visuo-spatial ability: Applied Animal Behaviour Science Vol 87(1-2) Jul 2004, 119-130.
- Nagy, K., Schrott, A., & Kabai, P. (2008). Possible influence of neighbours on stereotypic behaviour in horses: Applied Animal Behaviour Science Vol 111(3-4) Jun 2008, 321-328.
- Napolitano, F., De Rosa, G., Braghieri, A., Grasso, F., Bordi, A., & Wemelsfelder, F. (2008). The qualitative assessment of responsiveness to environmental challenge in horses and ponies: Applied Animal Behaviour Science Vol 109(2-4) Feb 2008, 342-354.
- Naujeck, A., Hill, J., & Gibb, M. J. (2005). Influence of sward height on diet selection by horses: Applied Animal Behaviour Science Vol 90(1) Jan 2005, 49-63.
- Nicodemus, M. C., & Clayton, H. M. (2003). Temporal variables of four-beat, stepping gaits of gaited horses: Applied Animal Behaviour Science Vol 80(2) Feb 2003, 133-142.
- Nicol, C. J., Badnell-Waters, A. J., Bice, R., Kelland, A., Wilson, A. D., & Harris, P. A. (2005). The effects of diet and weaning method on the behaviour of young horses: Applied Animal Behaviour Science Vol 95(3-4) Dec 2005, 205-221.
- Nilson, R. (2004). Equine-facilitated psychotherapy: Perspectives in Psychiatric Care Vol 40(2) Apr-Jun 2004, 42.
- Ninomiya, S. (2007). Social leaning and stereotypy in horses: Behavioural Processes Vol 76(1) Sep 2007, 22-23.
- Ninomiya, S., Mitsumasu, T., Aoyama, M., & Kusunose, R. (2007). A note on the effect of a palatable food reward on operant conditioning in horses: Applied Animal Behaviour Science Vol 108(3-4) Dec 2007, 342-347.
- Ninomiya, S., Sato, S., Kusunose, R., Mitumasu, T., & Obara, Y. (2007). A note on a behavioural indicator of satisfaction in stabled horses: Applied Animal Behaviour Science Vol 106(1-3) Aug 2007, 184-189.
- Ninomiya, S., Sato, S., & Sugawara, K. (2007). Weaving in stabled horses and its relationship to other behavioural traits: Applied Animal Behaviour Science Vol 106(1-3) Aug 2007, 134-143.
- No authorship, i. (1966). Review of Clever Hans. The Horse of Mr. Von Osten: PsycCRITIQUES Vol 11 (7), Jul, 1966.
- No authorship, i. (2006). "From Kids and Horses: Equine-Facilitated Psychotherapy for Children": Author's Retraction and Apology: International Journal of Clinical and Health Psychology Vol 6(1) Jan 2006, No Pagination Specified.
- Orland, B. (2006). Review of Bred for Perfection: Shorthorn Cattle, Collies, and Arabian Horses since 1800: Anthrozoos Vol 19(1) 2006, 91-93.
- Pageat, P. (2008). Response to Dodman, Wrubel & Cottam: Effect of a synthetic equine maternal pheromone during a controlled fear-eliciting situation: A critique on Falewee (January 2006): Applied Animal Behaviour Science Vol 109(1) Jan 2008, 88-93.
- Papakostas, Y. G., Daras, M. D., Liappas, I. A., & Markianos, M. (2005). Horse madness (hippomania) and hippophobia: History of Psychiatry Vol 16(4) Dec 2005, 467-471.
- Parker, M., Goodwin, D., & Redhead, E. S. (2008). Survey of breeders' management of horses in Europe, North America and Australia: Comparison of factors associated with the development of abnormal behaviour: Applied Animal Behaviour Science Vol 114(1-2) Nov 2008, 206-215.
- Parker, M., Redhead, E. S., Goodwin, D., & McBride, S. D. (2008). Impaired instrumental choice in crib-biting horses (Equus caballus): Behavioural Brain Research Vol 191(1) Aug 2008, 137-140.
- Parker, R., Watson, R., Wells, E., Brown, S. N., Nicol, C. J., & Knowles, T. G. (2004). The effect of blindfolding horses on heart rate and behaviour during handling and loading onto transport vehicles: Animal Welfare Vol 13(4) Nov 2004, 433-437.
- Pell, S. M., & McGreevy, P. D. (1999). A study of cortisol and beta-endorphin levels in stereotypic and normal thoroughbreds: Applied Animal Behaviour Science Vol 64(2) Jun 1999, 81-90.
- Piccione, G., Bertolucci, C., Foa, A., & Caola, G. (2004). Influence of fasting and exercise on the daily rhythm of serum leptin in the horse: Chronobiology International Vol 21(3) 2004, 405-417.
- Piccione, G., Costa, A., Giannetto, C., & Caola, G. (2008). Daily rhythms of activity in horses housed in different stabling conditions: Biological Rhythm Research Vol 39(1) Feb 2008, 79-84.
- Pluhacek, J., & Bartos, L. (2000). Male infanticide in captive plains zebra, Equus burchelli: Animal Behaviour Vol 59(4) Apr 2000, 689-694.
- Polito, R., Minero, M., Canali, E., & Verga, M. (2007). A pilot study on yearlings' reactions to handling in relation to the training method: Anthrozoos Vol 20(3) Sep 2007, 295-303.
- Porter, R. H., Duchamp, G., Nowak, R., & Daels, P. F. (2002). Induction of maternal behavior in non-parturient adoptive mares: Physiology & Behavior Vol 77(1) Sep 2002, 151-154.
- Proops, L., Burden, F., & Osthaus, B. (2009). Mule cognition: A case of hybrid vigour? : Animal Cognition Vol 12(1) Jan 2009, 75-84.
- Rahn, C. (1915). Cesaresco's psychology and training of the horse: Journal of Animal Behavior Vol 5(6) Nov-Dec 1915, 480-481.
- Rendon, R. A., Shuster, L., & Dodman, N. H. (2001). The effect of the NMDA receptor blocker, dextromethorphan, on cribbing in horses: Pharmacology, Biochemistry and Behavior Vol 68(1) Jan 2001, 49-51.
- Rietmann, T. R., Stuart, A. E. A., Bernasconi, P., Stauffacher, M., Auer, J. A., & Weishaupt, M. A. (2004). Assessment of mental stress in warmblood horses: Heart rate variability in comparison to heart rate and selected behavioural parameters: Applied Animal Behaviour Science Vol 88(1-2) Sep 2004, 121-136.
- Rothe, E. Q., Vega, B. J., Torres, R. M., Soler, S. M. C., & Pazos, R. M. M. (2005). From kids and horses: Equine facilitated psychotherapy for children: International Journal of Clinical and Health Psychology Vol 5(2) May 2005, 373-383.
- Rudman, R. (1998). The social organisation of feral donkeys (Equus asinus) on a small Caribbean island (St. John, US Virgin Islands): Applied Animal Behaviour Science Vol 60(2-3) Nov 1998, 211-228.
- Russell, L. A. (2003). Decoding Equine Emotions: Society & Animals Vol 11(3) Oct 2003, 265-266.
- Scheibe, K. M., Eichhorn, K., Kalz, B., Streich, W. J., & Scheibe, A. (1998). Water consumption and watering behavior of Przewalski horses ( Equus ferus przewalskii ) in a semireserve: Zoo Biology Vol 17(3) 1998, 181-192.
- Sighieri, C., Tedeschi, D., de Andreis, C., Petri, L., & Baragli, P. (2003). Behaviour patterns of horses can be used to establish a dominant-subordinate relationship between man and horse: Animal Welfare Vol 12(4) Nov 2003, 705-708.
- Sigurjonsdottir, H. (2007). Equine learning behaviour: The importance of evolutionary and ecological approach in research: Behavioural Processes Vol 76(1) Sep 2007, 40-42.
- Sigurjonsdottir, H., Van Dierendonck, M. C., Snorrason, S., & Thorhallsdottir, A. G. (2003). Social relationships in a group of horses without a mature stallion: Behaviour Vol 140(6) Jun 2003, 783-804.
- Smith, S., & Goldman, L. (1999). Color discrimination in horses: Applied Animal Behaviour Science Vol 62(1) Feb 1999, 13-25.
- Smith, S., & Goldman, L. (1999). "Color discrimination in horses": Erratum: Applied Animal Behaviour Science Vol 64(3) Jul 1999, 233.
- Sondergaard, E., & Halekoh, U. (2003). Young horses' reactions to humans in relation to handling and social environment: Applied Animal Behaviour Science Vol 84(4) Dec 2003, 265-280.
- Sondergaard, E., & Ladewig, J. (2004). Group housing exerts a positive effect on the behaviour of young horses during training: Applied Animal Behaviour Science Vol 87(1-2) Jul 2004, 105-118.
- Souris, A.-C., Kaczensky, P., Julliard, R., & Walzer, C. (2007). Time budget-, behavioral synchrony- and body score development of a newly released Przewalski's horse group Equus ferus przewalskii, in the Great Gobi B strictly protected area in SW Mongolia: Applied Animal Behaviour Science Vol 107(3-4) Nov 2007, 307-321.
- Stone, C. P. (1935). Sex difference in the running ability of thoroughbred horses: Journal of Comparative Psychology Vol 19(1) Feb 1935, 59-67.
- Taylor, T. S., & Matthews, N. S. (1998). Mammoth asses--selected behavioural considerations for the veterinarian: Applied Animal Behaviour Science Vol 60(2-3) Nov 1998, 283-289.
- Tenenbaum, G., Lloyd, M., Pretty, G., & Hanin, Y. L. (2002). Congruence of actual and retrospective reports of precompetition emotions in equestrians: Journal of Sport & Exercise Psychology Vol 24(3) Sep 2002, 271-288.
- Thorne, J. B., Goodwin, D., Kennedy, M. J., Davidson, H. P. B., & Harris, P. (2005). Foraging enrichment for individually housed horses: Practicality and effects on behaviour: Applied Animal Behaviour Science Vol 94(1-2) Oct 2005, 149-164.
- Toscano, M. J., & Friend, T. H. (2001). A note on the effects of forward and rear-facing orientations on movement of horses during transport: Applied Animal Behaviour Science Vol 73(4) Aug 2001, 281-287.
- Tyler, T. (2003). If Horses Had Hands: Society & Animals Vol 11(3) Oct 2003, 267-281.
- Van Breda, E. (2006). A Nonnatural Head-Neck Position (Rollkur) During Training Results in Less Acute Stress in Elite, Trained, Dressage Horses: Journal of Applied Animal Welfare Science Vol 9(1) 2006, 59-64.
- van Dierendonck, M. C., Sigurjonsdottir, H., Colenbrander, B., & Thorhallsdottir, A. G. (2004). Differences in social behaviour between late pregnant, post-partum and barren mares in a herd of Icelandic horses: Applied Animal Behaviour Science Vol 89(3-4) Dec 2004, 283-297.
- Vidrine, M., Owen-Smith, P., & Faulkner, P. (2002). Equine-facilitated group psychotherapy: Applications for therapeutic vaulting: Issues in Mental Health Nursing Vol 23(6) Sep 2002, 587-603.
- Visser, E. K., Van Reenen, C. G., Engel, B., Schilder, M. B. H., Barneveld, A., & Blokhuis, H. J. (2003). The association between performance in show-jumping and personality traits earlier in life: Applied Animal Behaviour Science Vol 82(4) Aug 2003, 279-295.
- von Borstel, U. U., Duncan, I. J. H., Shoveller, A. K., Merkies, K., Keeling, L. J., & Millman, S. T. (2009). Impact of riding in a coercively obtained Rollkur posture on welfare and fear of performance horses: Applied Animal Behaviour Science Vol 116(2-4) Jan 2009, 228-236.
- Walker, A. (1839). Horses. New York, NY: J & H G Langley.
- Waran, N. K., Clarke, N., & Farnworth, M. (2008). The effects of weaning on the domestic horse (Equus caballus): Applied Animal Behaviour Science Vol 110(1-2) Mar 2008, 42-57.
- Warren-Smith, A. K., Greetham, L., & McGreevy, P. D. (2007). Behavioral and physiological responses of horses (Equus caballus) to head lowering: Journal of Veterinary Behavior: Clinical Applications and Research Vol 2(3) May-Jun 2007, 59-67.
- Warren-Smith, A. K., & McGreevy, P. D. (2008). Equestrian coaches' understanding and application of learning theory in horse training: Anthrozoos Vol 21(2) Jun 2008, 153-162.
- Warren-Smith, A. K., McLean, A. N., Nicol, H. I., & McGreevy, P. D. (2005). Variations in the timing of reinforcement as a training technique for foals (Equus caballus): Anthrozoos Vol 18(3) 2005, 255-272.
- Weeks, J. W., Crowell-Davis, S. L., Caudle, A. B., & Heusner, G. L. (2000). Aggression and social spacing in light horse (Equus caballus) mares and foals: Applied Animal Behaviour Science Vol 68(4) Jul 2000, 319-337.
- Williams, D. E., & Norris, B. J. (2007). Laterality in stride pattern preferences in racehorses: Animal Behaviour Vol 74(4) Oct 2007, 941-950.
- Williams, J. L., Friend, T. H., Nevill, C. H., & Archer, G. (2004). The efficacy of a secondary reinforcer (clicker) during acquisition and extinction of an operant task in horses: Applied Animal Behaviour Science Vol 88(3-4) Oct 2004, 331-341.
- Wipper, A. (2000). The partnership: The horse-rider relationship in eventing: Symbolic Interaction Vol 23(1) 2000, 47-70.
- Yates, R., Powell, C., & Beirne, P. (2001). Horse maiming in the English countryside: Moral panic, human deviance, and the social construction of victimhood: Society & Animals Vol 9(1) 2001, 1-23.
- Yorke, J., Adams, C., & Coady, N. (2008). Therapeutic value of equine--Human bonding in recovery from trauma: Anthrozoos Vol 21(1) Mar 2008, 17-30.
- Greenwald, A. J. (2001). The effect of a therapeutic horsemanship program on emotionally disturbed boys. Dissertation Abstracts International: Section B: The Sciences and Engineering.
- Hayden, A. J. (2005). An exploration of the experiences of adolescents who participated in Equine-Facilitated Psychotherapy: A resiliency perspective. Dissertation Abstracts International: Section B: The Sciences and Engineering.
- Held, C. A. (2007). Horse girl: An archetypal study of women, horses, and trauma healing. Dissertation Abstracts International: Section B: The Sciences and Engineering.
- Karol, J. M. (2000). A psychotherapeutic riding program: An existential theater for healing. Dissertation Abstracts International: Section B: The Sciences and Engineering.
- Koch, L. F. (2008). Equine therapy: What impact does owning or riding a horse have on the emotional well-being of women? Dissertation Abstracts International Section A: Humanities and Social Sciences.
- Macuda, T. J. (2001). Equine colour vision. Dissertation Abstracts International: Section B: The Sciences and Engineering.
- Pope, J. B. (1998). Early prepubertal castration of domestic horse foals born into a broodmare herd: Effects on social behavior, flehmen responses, and testosterone levels. Dissertation Abstracts International: Section B: The Sciences and Engineering.
- Sappington, B. K. F. (1995). The relationship between discrimination reversal learning and performance tasks in yearling and two-year-old horses. Dissertation Abstracts International: Section B: The Sciences and Engineering.
- Sierra, J. J. (2006). A dual process of horse race bettors: The affect of cognitive and "anticipated" emotional factors on making uncertain choices. Dissertation Abstracts International Section A: Humanities and Social Sciences.
- Stone, S. M. (2002). Specific concept formation in horses: You sure look familiar. Dissertation Abstracts International: Section B: The Sciences and Engineering.
- Tsohantaridis, V. A. (2005). Development of the Jewel Equestrian Scale. Dissertation Abstracts International: Section B: The Sciences and Engineering.
- Weeks, J. W. (2001). Maternal investment in equus caballus. Dissertation Abstracts International: Section B: The Sciences and Engineering.
- Williams, J. L. (2003). Clicker training in horses: Operant conditioners and secondary reinforcers in horse training. Dissertation Abstracts International: Section B: The Sciences and Engineering.
- Anthony, David W. (1996). "Bridling Horse Power: The Domestication of the Horse" Horses Through Time, First Edition, Boulder, CO: Roberts Rinehart Publishers.
- Apperson, George Latimer and Martin Manser (2006). Dictionary of Proverbs, Wordsworth Editions.
- Bartlett, Virginia K. (1994). Keeping House: Women's Lives in Western Pennsylvania, 1790–1850, University of Pittsburgh Press.
- Bennett, Deb (1998). Conquerors: The Roots of New World Horsemanship, First Edition, Solvang, CA: Amigo Publications, Inc..
- British Horse Society (1966). The Manual of Horsemanship of the British Horse Society and the Pony Club, 6th edition, reprinted 1970, Kenilworth, UK: British Horse Society.
- Budiansky, Stephen (1997). The Nature of Horses, New York:NY: Free Press.
- Bush, Karen and Julian Marczak (2005). The Principles of Teaching Riding: The Official Manual of the Association of British Riding Schools, David & Charles.
- Campbell, B.N. (2001). National Gambling Impact Study Commission Final Report (1999), Darby, PA: DIANE Publishing.
- Chamberlin, J. Edward (2006). Horse: How the Horse Has Shaped Civilizations, New York, NY: Bluebridge.
- Collins, Tony, John Martin, Wray Vamplew (2005). Encyclopedia of Traditional British Rural Sports, London, UK: Routledge.
- DeFilippis, Chris (2006). The Everything Horse Care Book, Avon, MA: Adams Media.
- Dines, Lisa (2001). The American Mustang Guidebook: History, Behavior, and State-By-State Directions on Where to Best View America's Wild Horses, Minocqua, WI: Willow Creek Press.
- Edwards, Elwyn Hartley (2002). Horses, Second American Edition, New York, NY: Dorling Kindersley.
- Edwards, Elwyn Hartley (1994). The Encyclopedia of the Horse, London, UK: Dorling Kindersley.
- Edwards, Gladys Brown (1973). The Arabian: War Horse to Show Horse, Revised Collectors Edition, Rich Publishing.
- Ensminger, M. E. (1990). Horses and Horsemanship: Animal Agricultural Series, Sixth Edition, Danville, IN: Interstate Publishers.
- Ensminger, M.E. (1991). Horses and Tack, Revised Edition, Boston, MA: Houghton Mifflin Company.
- Evans, J. et al. (1990). The Horse, Second Edition, New York, NY: Freeman.
- Evans, James Warren (1992). Horse Breeding and Management, Amsterdam: Elsevier Health Sciences.
- Fort, Matthew (2005). Eating Up Italy: Voyages on a Vespa, London, UK: Centro Books.
- Giffin, M.D., James M. and Tom Gore, D.V.M. (1998). Horse Owner’s Veterinary Handbook, Second Edition, New York: Howell Book House.
- Gifford, Angela (1998, reprinted 2000). "Working Draught Horses as Singles and Pairs" The Working Horse Manual, Tonbridge, UK: Farming Press.
- Gifford, Angela (1998, reprinted 2000). "Working Horses in Forestry" The Working Horse Manual, Tonbridge, UK: Farming Press.
- Hairston, Rachel and Madelyn Larsen (2004). The Essentials of Horsekeeping, New York, NY: Sterling Publishing Company, Inc..
- Hammond, Gerald (2000). The Language of Horse Racing, London: Taylor & Francis.
- Harris, Susan E. (1993). Horse Gaits, Balance and Movement, New York: Howell Book House.
- Hedge, Juliet and Don M. Wagoner (2004). Horse Conformation: Structure, Soundness and Performance, Guilford, CT: Globe Pequot.
- Henry, Marguerite (1967). All About Horses, New York, NY: Random House.
- Hurd, Edward Payson (translator) (1886). Diseases of the Stomach and Intestines, New York, NY: W. Wood & Company.
- Kreling, Kai (2005). "The Horse's Teeth" Horses' Teeth and Their Problems: Prevention, Recognition, and Treatment, Guilford, CT: Globe Pequot.
- MacGregor, Arthur (1985). Bone, Antler, Ivory and Horn: Technology of Skeletal Materials Since the Roman Period, Totowa, NJ: Barnes & Noble.
- Matossian, Mary Kilbourne (1997). Shaping World History: Breakthroughs in Ecology, Technology, Science, and Politics, Armonk, NY: M.E. Sharpe.
- McBane, Susan (1992). A Natural Approach to Horse Management, London: Methuen.
- McBane, Susan (1997). The Illustrated Encyclopedia of Horse Breeds, Edison, NJ: Wellfleet Press.
- Mettler, John J. Jr. (1989). Horse Sense: A Complete Guide to Horse Selection and Care, Pownal, VT: Storey Communications, Inc..
- Miller, Lynn R. (1981, reprinted 2000). Work Horse Handbook, First Edition, Fifteenth Impression, Sisters, OR: Small Farmer's Journal Inc..
- Miller, Robert M. (1999). Understanding the Ancient Secrets of the Horse's Mind, Neenah, WI: Russell Meerdink Company Ltd.
- Miller, Robert M. and Rick Lamb (2005). Revolution in Horsemanship and What it Means to Mankind, Guilford, Connecticut: Lyons Press.
- Mills, Bruce and Barbara Carne (1988). A Basic Guide to Horse Care and Management, New York, NY: Howell Book House.
- Myers, Jane (2005). Horse Safe: A Complete Guide to Equine Safety, Collingwood, UK: CSIRO Publishing.
- Ockerman, Herbert W.; Hansen, Conly L. (2000). Animal By-product Processing & Utilization, Lancaster, PA: CRC Press. URL accessed 2008-04-20.
- Olsen, Sandra L. (1996). "Horse Hunters of the Ice Age" Horses Through Time, First Edition, Boulder, CO: Roberts Rinehart Publishers.
- Olsen, Sandra L. (1996). "In the Winner's Circle: The History of Equestrian Sports" Horses Through Time, First Edition, Boulder, CO: Roberts Rinehart Publishers.
- Prince, Eleanor F. and Gaydell M. Collier (1974). Basic Horsemanship: English and Western, New York, NY: Doubleday.
- Self, Margaret Cabell (2005). Riding Simplified, Kessinger Publishing.
- Sellnow, Les (2004). Happy Trails: Your Complete Guide to Fun and Safe Trail Riding, Eclipse Press.
- Smith, BP (1996). Large Animal Internal Medicine, Second Edition, St. Louis, MO: Mosby.
- Sponenberg, D. Phillip (1996). "The Proliferation of Horse Breeds" Horses Through Time, First Edition, Boulder, CO: Roberts Rinehart Publishers.
- Vogel, Colin B.V.M (1995). The Complete Horse Care Manual, New York, NY: Dorling Kindersley Publishing, Inc..
- Wheeler, Eileen (2006). "Fence Planning" Horse Stable And Riding Arena Design, Armes, IA: Blackwell Publishing.
|This page uses Creative Commons Licensed content from Wikipedia (view authors).|