Pre-historic Animals, Reptiles and Amphibians

This volume answers questions children ask about pre-historic animals, reptiles and amphibians. Included are questions such as: When did life begin? What was the wooly mammoth? What is the difference between alligators and crocodiles? Why do snakes have scales? How do snakes hear? What is a tuatara? How do turtles breathe underwater? What are amphibians?.