The World's Worst Pets, from Children's author David Walliams. Marvel at Houdini, the magician's rabbit. Take a trip around the world with Zoom, the supersonic tortoise. Gasp at the chaos created by Griselda, a grizzly bear with a big secret. And RUN FOR YOUR LIVES! It's Furp, the monstrous goldfish! Good pets, bad pets, supervillain pets, pets as big as a house and pets that could eat you in one gulp - these are the most hilarious and horrendous animals around.