Here's a riddle: What is the largest lizard native to the United States? It lives in the desert, has sharp claws, scaly skin, and its tongue is forked. Look inside All About North American Gila Monsters to read and learn about this fascinating, poisonous lizard. Gila Monsters is one of 18 books in our Animals Around the World series. Each title is beautifully illustrated with large, close-up photographs.