Pigs can wag their tails like dogs; chickens balance on one leg when they need rest; sheep have an excellent memory for faces. These are a few of the fascinating facts relayed in Pigology, Chickenology, and Sheepology! With bright illustrations and cheerful writing, these visual encyclopedias are recommended for ages 6 to 10, but grown-up animal enthusiasts will get a kick out of them too. We're also offering three 1,000-piece jigsaw puzzles (measuring 25"x20"), showcasing various species of each farm animal.