Petting zoos feature a variety of domestic animals. Common animals include cattle, zebu, yaks, sheep, goats, rabbits, guinea pigs, ponies, alpacas, llamas, pigs, miniature donkeys, miniature horses, ducks, geese, chickens, and turkeys. They occasionally contain a few exotic animals such as kangaroos, wallabies, emus, deer, zebras, parrots, porcupines, camels, ostriches, bison, water buffaloes, rheas, peafowl, guineafowl, antelopes, capybaras, lemurs, tortoises and many others.
Petting zoos are popular with small children, who will often feed the animals. In order to ensure the animals' health, the food is supplied by the zoo, either from vending machines or a kiosk. Food often fed to animals includes grass and crackers and also in selected feeding areas hay is a common food. Such feeding is an exception to the usual rule about not feeding animals.