What makes a reptile a reptile? How is a crocodile different from an alligator? Why do iguanas bask in the sun? Classifying Living Things investigates how and why we group animals. Each book focuses on a particular class of living things, looking at the key characteristics that set its members apart from those of other classes. Discover how classes of living things have evolved, and how species have adapted to suit their environments. Find out why certain animals may show some characteristics of a particular class, but actually belong to another. 'Classifying Reptiles' looks at the amazing class of scaly, cold-blooded creatures. Find out how reptiles are grouped into orders and how each one is different from the rest. From turtles to taipans, from giant crocodiles to tiny geckos, discover what makes reptiles so special.