Descriptions of 244 species plus 260 subspecies, focusing on the key features needed to identify them.

Robert C. Stebbins is Emeritus Professor of Zoology and Emeritus Curator in Herpetology, Museum of Vertebrate Zoology, University of California, Berkeley. He is the author of numerous books, including A Field Guide to Western Reptiles and Amphibians. Nathan W. Cohen is Emeritus Director of Curriculum Development in Science, University of California Extension, Berkeley. This is a book for all readers who want to learn about amphibians, the animal...

Identifies more than 200 species of reptiles and amphibians

Provides descriptions and illustrations of approximately two hundred of the most common snakes, turtles, lizards, frogs and toads, salamanders, alligators, and crocodiles of North America.