These ten tales of the world's worst pets ever will have children shaking with laughter. You'll never look at pets the same way again! 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 most monstrous goldfish ever. Good pets, mischievous pets, supervillain pets, pets as big as a house, pets that could eat you in one bite and even pets that aren't pets, here are the most hilarious animals around.