||This article needs additional citations for verification. (August 2011)|
Early 20th century animal trainer and a leopard.
|Activity sectors||social science, busking, circus, show business|
|Competencies||skills, manual dexterity|
|Education required||see professional requirements|
Animal training refers to teaching animals specific responses to specific conditions or stimuli. Training may be for purposes such as companionship, detection, protection, and entertainment. The type of training an animal receives will vary depending on the training method used and the purpose for training the animal. For example, a seeing eye dog will be trained to achieve a different goal than a wild animal in a circus.
In some countries, animal trainer certification bodies exist, but they do not share consistent goals or requirements. The United States does not require animal trainers to have any specific certification. An animal trainer should consider the natural behaviors of the animal and aim to modify behaviors through a basic system of reward and punishment.
The Behavioral Approach 
During training, an animal trainer can administer one of four potential consequences for a given behavior: positive reinforcement, negative reinforcement, positive punishment, and negative punishment. Positive reinforcement occurs when an animal's behavior is followed by a stimulus that increases occurrences of the behavior in the future. Negative reinforcement occurs when a behavior is followed by the removal of an aversive stimulus and occurrences of the behavior increase in the future. Positive punishment occurs when a behavior is followed by the addition of an aversive stimulus and this decreases occurrences of the behavior in the future. Negative punishment occurs when a behavior is followed by the removal of a stimulus and occurrences of the behavior decrease in the future.
Behavior analysts emphasize the use of positive reinforcement for increasing desirable behaviors  and negative punishment for decreasing undesirable behaviors. If punishment is going to be used to decrease an undesirable behavior, the animal must be able to receive positive reinforcement for an alternative behavior.
Establishing New Behaviors 
Reinforcement should be delivered on a predetermined schedule. A schedule of reinforcement specifies whether each response is reinforced or only some responses. Schedules of reinforcement include variable ratio, fixed ratio, variable interval, and fixed interval. In a fixed ratio schedule, a specific number of responses occur before a reinforcer is delivered. In a variable ratio schedule, reinforcer delivery occurs after a set number of responses, but that number varies around an average number. In a fixed interval schedule, the first response that is emitted after a set time has elapsed is reinforced. In a variable interval schedule, the first response that is emitted after a set but variable amount of time has elapsed is reinforced. While continuous reinforcement in a fixed ratio schedule may be necessary for the initial learning stages, a variable ratio schedule is the most effective at maintaining behavior over long periods of time.
There are various methods animal trainers can use to prompt an animal to respond to a stimulus in a specific way. Shaping is a process by which successive approximations are rewarded until the desirable response topography is attained. An animal trainer can use conditioned reinforcers, like clickers, to bridge the interval between response and positive reinforcement. Discriminative stimuli such as signals, targets, and cues can be used to prompt a response from an animal, and can be changed to other stimuli or faded in magnitude. In order to delay satiation, reinforcer size should be as small as possible and still be effective for reinforcement. Also, the timing of the delivery of a reinforcer is crucial; initially the interval between response and consequence must be minimal in order for the animal to associate the consequence with the response.
Other Considerations 
Certain subfields of animal training tend to also have certain philosophies and styles, for example fields such as companion bird training, hunting bird training, companion dog training, show dog training, dressage horse training, mahout elephant training, circus elephant training, zoo elephant training, zoo exotic animal training, marine mammal training. The degree of trainer protection from the animal may also vary. The variety of tasks trained may also vary, and can range from entertainment, husbandry (veterinary) behaviors, physical labor or athleticism, habituation to averse stimuli, interaction (or non-interaction) with other humans, or even research (sensory, physiological, cognitive).
Training also may take into consideration the natural social tendencies of the animal species (or even breed), such as predilections for attention span, food-motivation, dominance hierarchies, aggression, or bonding to individuals (conspecifics as well as humans). Consideration must also be given to practical aspects on the human side such as the ratio of the number of trainers to each animal. In some circumstances one animal may have multiple trainers, in others, a trainer might attend simultaneously to many animals in a training session. Sometimes training is accomplished with a single trainer working individually with a single animal.
Service animals 
Service animals, such as assistance dogs, Capuchin monkeys and miniature horses, are trained to utilize their sensory and social skills to bond with a human and help that person to offset a disability in daily life. The use of service animals, especially dogs, is an ever-growing field, with a wide range of special adaptations.
In the United States, selected inmates in prisons are used to train service dogs. In addition to adding to the short-supply of service animals, such programs have produced benefits in improved socialization skills and behavior of inmates.
Film and television 
Organizations such as the American Humane Association monitor the use of animals such as those used in the entertainment industry, but they do not monitor their training. The Patsy Award (Picture Animal Top Star of the Year) was originated by the Hollywood office in 1939 after a horse was killed in an on-set accident during the filming of the Tyrone Power film Jesse James. The award now covers both film and television and is separated into four categories: canine, equine, wild and special.
One famous animal trainer, Frank Inn, received over 40 Patsy awards. While there is a high demand mammals for film and television, there is also a demand for other animals. Steven Kutcher has filled this niche for insects.
Companion animals 
Basic obedience training tasks for dogs include walking on a leash, attention, housebreaking, nonaggression, and socialization with humans or other pets. Dogs are also trained for many other activities, such as dog sports, service dogs, and other working dog tasks.
Positive reinforcement for dogs can include primary reinforcers such as food, or social reinforcers such as vocal ("good boy") or tactile (stroking) ones. Positive punishment, if used at all, can be physical, such as pulling on a leash or spanking, or may be vocal ("bad dog"). Bridges to positive reinforcement include vocal cues, whistling, and dog whistles, as well as clickers used in clicker training, a method popularized by Karen Pryor. Negative reinforcement may also be used. Punishment is also a tool, including withholding of food or physical discipline.
The primary purpose of training horses is to socialize them to be around humans, teach them to behave in a manner that makes them safe for humans to handle, and, as adults to carry a rider under saddle or to be driven in order to pull a vehicle. As prey animals, much effort must be put into training horses to overcome its natural flight or fight instinct and accept handling that would not be natural for a wild animal, such as willingly going into a confined space, or having a predator (a human being) sit on its back. As training advances, some horses are prepared for competitive sports, up to the Olympic games, where horses are the only animal athlete that is used at the Olympics. All equestrian disciplines from horse racing to draft horse showing require the horse to have specialized training.
Unlike dogs, horses are not motivated as strongly by positive reinforcement rewards as they are motivated by other operant conditioning methods such as the release of pressure as a reward for the correct behavior, called negative reinforcement. Positive reinforcement techniques such as petting, kind words, rewarding of treats, and clicker training have some benefit, but not to the degree seen in dogs and other predator species. Punishment of horses is effective only to a very limited degree, usually a sharp command or brief physical punishment given within a few seconds of a disobedient act. Horses do not correlate punishment to a specific behavior unless it occurs immediately. They do, however, have a remarkably long memory, and once a task is learned, it will be retained for a very long time. For this reason, poor training or allowing bad habits to be learned can be very difficult to remedy at a later date.
Typical training tasks for companion birds include perching, non-aggression, halting feather-picking, controlling excessive vocalizations, socialization with household members and other pets, and socialization with strangers. The large parrot species frequently have lifespans that exceed that of their human owners, and they are closely bonded to their owners. In general, parrot companions usually have clipped wings, which facilitates socialization and controlling aggression and vocalizations. Some birds of prey are trained to hunt, an ancient art known as falconry or hawking. In China the practice of training Cormorants to catch fish has gone on for over 1,200 years.
Training chickens has become a way for trainers of other animals (primarily dogs) to perfect their training technique. Bob Bailey, formerly of Animal Behavior Enterprises and the IQ Zoo, teaches chicken training seminars where trainers teach poultry to discriminate between shapes, to navigate an obstacle course and to chain behaviors together. Chicken training is done using operant conditioning, using a clicker and chicken feed for reinforcement. The training of chickens has become a popular event for dog trainers. Trained chickens may be confined to a display where they play Tic-Tac-Toe against humans for a fee.
Fish can also be trained. For example, a goldfish may swim toward its owner and follow him as he walks through the room, but will not follow anyone else. The fish may swim up and down, signalling the owner to turn on its aquarium light when it is off, and it will skim the surface until its owner feeds it. Pet goldfish have also been taught to perform more complicated tasks, such as doing the limbo and pushing a miniature soccer ball into a net.
Wild animals 
Wild animal training 
Wild animals may also be trained, such as bears, lions, tigers, leopards, or other big cats. The Ursari Romani people were specialized in bear training, although they sometimes also used Old World monkeys. Later on, the German animal merchant Carl Hagenbeck, used brown bears and lions in his shows.
The wild animal training used for lions is called lion taming.
Zoological parks 
Animals in public display are sometimes trained for educational, entertainment, management, and husbandry behaviors. Educational behaviors may include species-typical behaviors under stimulus control such as vocalizations. Entertainment may include display behaviors to show the animal, or simply arbitrary behaviors. Management includes movement, such as following the trainer, entering crates, or moving from pen to pen, or tank-to-tank through gates. Husbandry behaviors facilitate veterinary care, and can include desensitization to various physical examinations or procedures (such as cleaning, nail clipping, or simply stepping onto a scale voluntarily), or the collection of samples (e.g. biopsy, urine). Such voluntary training is important for minimizing the frequency with which zoo collection animals must be anesthetized or physically restrained.
Marine mammal parks 
Many marine mammals are trained for entertainment such as bottlenose dolphins, killer whales, belugas, sea lions, and others.
In a public display situation, the audience's attention is focused on the animal, rather than the trainer; therefore the discriminative stimulus is generally gestural (a hand sign) and sparse in nature. Unobtrusive dog whistles are used as bridges, and positive reinforcers are either primary (food) or tactile (rub downs), and not vocal. However, pinnipeds and mustelids (sea lions, seals, walruses, and otters) can hear in our frequency, so most of the time they will receive vocal reinforcers during shows and performances. The shows are turned into more of a play production because of this, instead of just a run through of behaviors like cetaceans generally do in their shows. Guests can often hear these vocal reinforcers when attending a Sea World show. During the Clyde and Seamore show, the trainers may say something like: "Good grief, Clyde!" or "Good job, Seamore". The trainers substitute the word "good" in the place of food or rubdowns when teaching a specific behavior to the animals so that the animals no longer need constant feeding as praise for achieving the appropriate behavior.
List of notable animal trainers 
Known for their influence on the circus:
- Nadezhda Durova (1783–1866) founded the Durov family of performers in the Russian circus.
- Anatoly Durov (1887–1928) Russian circus animal trainer and founder of the Durov Animal Theater in Moscow.
- Carl Hagenbeck (1844–1913) a merchant of wild animals who introduced "natural" animal enclosures.
- Gunther Gebel-Williams (1934–2001) trained animals for the Ringling Bros. and Barnum & Bailey Circus.
- Martin Lacey, (born 1947), animal trainer, owner of the Great British Circus, trained most of the tigers used in the ESSO TV advertisements in the 1970s.
- Martin Lacey, Jr., (born 1977), son of Martin, an animal trainer and performer with Circus Krone in Munich.
Known for scientific research:
- Ivan Pavlov (1849–1946) studied the psychology of animal training and described the phenomenon of classical conditioning.
- Nell Shipman (1892–1970) a Canadian film maker in early Hollywood.
- Frank Inn (1916–2002) trained dogs used in the Benji series.
- Brothers Frank Weatherwax and Rudd Weatherwax trained the collie Pal who portrayed the first Lassie.
- Ralph Helfer
- Richard (Ric) O'Barry trained dolphins for the original 1960s Flipper television series, now opposes dolphin captivity
- Boone Narr, one of the most celebrated Hollywood animal trainers.
- Felix Ho, professional dog behaviorist, international dog sport championship competitor and judge
- Warren Eckstein, animal trainer, author and radio personality.
- Victoria Stilwell, dog trainer, author and television presenter.
- Steve Austin dog trainer (particularly detection dogs), and television personality.
- Dave Salmoni, animal trainer, entertainer, and producer.
- Cesar Millan, animal behaviorist and a developer of rehabilitation techniques for owners of dogs with behavioral problems, as featured in his Dog Whisperer television series.
See also 
- Animals in sport
- Falconry Raptors (birds of prey) trained to hunt or pursue game.
- Horse training
- Lion taming
- Mahout Elephant trainer
- Military dolphin
- Show (animal)
Related to animal behavior, psychology and training:
- B. F. Skinner — Founder of Behaviorism
- Behaviorism — Psychological theory under which operant conditioning falls, the effects of external events (stimuli) on behavior.
- Cognitivism — Psychological theory antithetical to behaviorism, internal mental representations and operations affecting behavior.
- Ethology — Study of the natural behavior of animals.
- Operant conditioning — The development of discriminative stimuli (SDs)
- Shaping (psychology)
- Pryor, Don't Shoot the Dog, p. x
- McGreevy & Boakes, Carrots and Sticks: Principles of Animal Training, p. xi-23
- Miltenberger, Behavior Modification: Principles and Procedures, p. 78
- Miltenberger, Behavior Modification: Principles and Procedures, p. 122
- Miltenberger, Behavior Modification: Principles and Procedures, p. 123
- Pryor, Don't Shoot the Dog, p. 2
- Miltenberger, Behavior Modification: Principles and Procedures, p. 135
- Miltenberger, Behavior Modification: Principles and Procedures, p. 86
- Miltenberger, Behavior Modification: Principles and Procedures, p. 88
- Miltenberger, Behavior Modification: Principles and Procedures, p. 89
- Miltenberger, Behavior Modification: Principles and Procedures, p. 90
- Pryor, Don't Shoot the Dog, p. 21
- Pryor, Don't Shoot the Dog, p. 35
- Pryor, Don't Shoot the Dog, p. 15
- Pryor, Don't Shoot the Dog, p. 70, 75, 77, 79
- Pryor, Don't Shoot the Dog, p. 10
- Pryor, Don't Shoot the Dog, p. 7-9
- [ Displaying Abstract ] (2012-06-10). "nytimes.com: Cormorant Fishing". New York Times. Retrieved 2013-04-09.
- "Fish School". Fish School. Retrieved 2013-04-09.
- Sandra Choron, Harry Choron (2005). Planet Dog: A Doglopedia (illustrated ed.). Houghton Mifflin Harcourt. p. 44. ISBN 978-0-618-51752-7.
- Pryor, Karen. (1999). Don't Shoot the Dog! The New Art of Teaching and Training. Bantam Books: New York, NY.
- McGreevy, P & Boakes, R."Carrots and Sticks: Principles of Animal Training".(Sydney: "Sydney University Press"., 2011).
- Miltenberger, R. G. (2008). Behavior modification: Principles and procedures. (4th ed). Belmont, CA: Wadsworth.
Further reading 
- Nance, Susan. Entertaining Elephants: Animal Agency and the Business of the American Circus (Johns Hopkins University Press; 2013)
- Ramirez, K. (1999). Animal training: Successful animal management through positive reinforcement. Shedd Aquarium: Chicago, IL.