When it comes to pets, there are no rules. From tiny to mammoth, meet the world's most extraordinary pets. Pets featured include a miniature horse that stands only 20 tall, a two and half pound dog named Lucy, and tiny African pygmy hedgehogs that fit in a tea cup. At the other end of the scale are Big Boy, an extra large monitor lizard, a reindeer named Star, and the ultimate giant house pet is Wildthing a 2100 lb. buffalo.