1940, Bailey joined Psi Chi, the national honor society in psychology. She graduated with her bachelor of arts degree summa cum laude in 1941, the only member of her graduating class with an A average. Work with Keller Breland After Bailey earned her bachelor's degree, she married psychologist Keller Bramwell Breland (1915–1965) on August 1, 1941. Together, they had three children: Bradley (1946), Frances (1948), and Elizabeth (1952). Bailey became the second graduate student to work under the renowned Skinner. Her husband soon came to work with Skinner as well. While graduate students, they collaborated with Skinner on military research during World War II. Their work involved training pigeons for use by the U.S. Navy, teaching the birds to guide bombs. This was never actually used. Although many sources incorrectly refer to the work as Project Pigeon or the Pigeon Project, Bailey assured colleagues that its name had actually been "Pigeon in a Pelican", with pelican referring to the missile each pigeon was to guide. Bailey and Breland saw the commercial possibilities of operant training. So they left the University of Minnesota without completing their doctorates, and founded Animal Behavior Enterprises (ABE) on a farm in Minnesota. Skinner tried to dissuade the couple from abandoning their graduate education for an untested commercial endeavor. Classmate Paul Meehl bet $10 they would fail. (His 1961 check for $10 later hung framed on Bailey's office wall.) ABE's first project was training farm animals to appear in feed advertisements for General Mills. Bailey and Breland went on to train "more animals and different species of animals than any other animal trainers" of their time, including animals of the land (cats, cattle, chickens, dogs, goats, pigs, rabbits, raccoons, rats, and sheep), the air (ducks, parrots, and ravens), and the sea (dolphins and whales). At their busiest, they trained "more than 1,000 animals at a given time". In training animals for recreational facilities such as Marineland of Florida, Parrot Jungle, SeaWorld, and Six Flags, they created the very first dolphin and bird shows, a form of program now considered traditional entertainment fare. Most major theme parks' animal programs can be traced back to the couple's pioneering work. They also established the first coin-operated animal shows. The Buck Bunny commercial featured their trained rabbits for a Coast Federal Savings television ad that ran for twenty years and which still holds the record for longest running TV commercial