Studies & Research
Print|Text Size: ||
Chicken Training with Your Dog

A number of factors set the Baileys apart from other experienced trainers. The fact that between the two of them Marian and Bob represent 103 years of training and have trained over 140 species of animals is impressive in its own right. However, their contributions, especially Marian’s, to the field of animal training extend well beyond numbers. Marian and her now-deceased first husband, Keller Breland, were at the forefront of operant conditioning when it was a relatively new area of study. They were among B. F. Skinner’s first graduate students in the early 1940s. In an odd twist of fate, their studies were interrupted by World War II when Skinner took a hiatus from his university research and instead worked for the U.S. Navy on a project training pigeons to guide missiles. He enlisted Marian and Keller to help, and it was during this project that the two gained invaluable practical experience with the most advanced principles of operant conditioning—aspects they’d read about in their studies but never seen in action.

Surprisingly, it was the simpler principles that convinced them to make animal training a career. Principles such as behavior shaping, whereby you start with a simple behavior that the animal readily offers and gradually reinforce behaviors that look more and more like your goal behavior.

“Skinner had a push button in his hand and had the electronic feeder outside of the training box,” says Marian, recalling an incident during the pigeon bomb guidance project. “At one point he took one of the pigeons outside of its training box and worked on shaping its response because for some reason the pigeon was not pecking its target. So Skinner demonstrated the shaping process. It was then that Keller and I realized how powerful this system was. And we were very excited about it. We decided that after the war we would get into something where we could apply this.”

Since neither had gone on to get a clinical degree they knew they couldn’t get into the treatment of people using this technique. But since they both liked animals and were familiar with different kinds of animals, they decided to go into the animal business.

They started Animal Behavior Enterprises (ABE), a company whose goal was to demonstrate a better, scientific way of training animals in a humane manner using positive reinforcement. They started with dogs, thinking that with so many untrained dogs in the U.S. they’d just demonstrate their new humane way of training and people would begin coming in by the thousands. Says Marian, “We thought it would be a cinch.”

Well, the training part was, but unfortunately, the idea was too advanced for its time. Trainers shunned the new method, claiming that people had been training dogs for centuries already.

Undaunted by this obstacle, Marian and Keller instead headed in a different direction. For 47 years, ABE mass-produced trained animals for its own shows and for animal shows across the country. At their height, the Brelands were training about 1,000 animals at a given time for companies such as General Mills. They also worked on animal behavior research and training projects for groups such as the U.S. Navy and Purina, as well as at Marineland of Florida and Parrot Jungle, where they developed the first of the now traditional dolphin shows and parrot shows. Through it all, they kept rigorous data on all of the training sessions and published several landmark papers in respectable scientific journals.

During their 47 years, they made a number of important contributions to the animal training world. Says Marian, “One contribution was to give the science of behavior to animal trainers. To encourage the use of operant conditioning behavior analysis in many fields of animal work: in medical behaviors for animals, husbandry behaviors, show behaviors. Just a large number of fields have taken up the operant methods and have used them quite successfully. We’ve been quite gratified by this.”


Sophia Yin, DVM, (recently deceasedwas an applied animal behaviorist. A long-time The Bark contributing editor, she was also the author of two behavior books.

Remembering Dr. Sophia Yin

Illustration by Tim Carpenter

More From The Bark

More in Studies & Research:
Canine Vision Differs From Human Vision
Studying Human Behavior in Dog Agility
Smell You Later
Moms Affect Guide Dog Success
How Dogs Are Helping Researchers Cure Color Blindness
Baby Face: The Allure of Cute Dogs
Breeds and Behavior
Genetics of Canine Personality Traits
Interpreting Canine Body Language
It Matters Where Your Dog Came From