Guinea pigs come from South America, where they are a delicacy. They like to live in large groups, called herds. Baby guinea pigs, known as pups, are born with hair, open eyes and all their teeth. Guinea pigs make delightful pets, being friendly and talkative; they squeak, purr and popcorn – which means jumping up and down with excitement. Michael Bond, who wrote the Paddington Bear books, also wrote about a guinea pig called Olga da Polga.