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...