Your body sports more hair than a gorilla. About 600 different species of bacteria are living in your mouth. Your head is full of holes. Back when you were a two-month-old embryo, you had a tail. Face it --- you are weird! All these wonderfully weird body features make us human. They also show that we're part of an animal kingdom whose members share a lot more than the same planet. This book tackles those weird questions that everyone's curious about...