" A pair of enormous purple toads sat gulping wetly and feasting on dead blowflies. A gigantic tortoise with a jewel-encrusted shell was glittering near the window. Poisonous orange snails were oozing slowly up the side of their glass tank, and a fat white rabbit kept changing into a silk top hat and back again with a loud popping noise. Then there were cats of every color, a noisy cage of ravens, a basket of funny custard-colored furballs that were humming loudly, and on the counter, a vast cage of sleek black rats that were playing some sort of skipping game using their long, bald tails. "
― J.K. Rowling , Harry Potter and the Prisoner of Azkaban (Harry Potter, #3)