Why Do Snakes Hiss?

Many people like snakes, lizards, and turtles, and there's so much to find out about all of these scaly-skinned animals. Are all snakes poisonous? Why do snakes shed their skin? What unusual things can lizards do? Do lizards ever lose their tails? Why do turtles have shells? Kids will find the answers-and much more-in this fun, fact-filled introduction to reptiles. Filled with colorful photographs and illustrations, this is just right for any reptile lover.