This updated edition vetted by an expert introduces young readers to everything they would want to know about the closest living relatives of dinosaurs, alligators and crocodiles. With kid-friendly text and diagrams, Gibbons compares the two reptiles--their physical differences, what they eat, where they are found, how fast they swim, how they raise their young, and more. Kids will want to read this book again and again to learn all about these crocodilians that have been around for millions of years. A great read-aloud for the child who loves the reptile house at the zoo or nonfiction resource for older children. Includes extra facts about alligators and crocodiles in the back!