Pocket Guide to the Amphibians and Reptiles of Costa Rica introduces readers to all 470 amphibian and reptile species currently known to occur in the country. Drawing on thirty years of research and field study, Twan Leenders walks readers through the rich diversity of the country's herpetofauna―salamanders, frogs, crocodilians, turtles, lizards, snakes, and even the elusive, rarely seen caecilians. Numerous illustrations coupled with key field marks and copious pointers on how to distinguish similar looking species enable quick identification in the field. This pocket guide features: - 136 color plates and more than 700 photographs - 48 black-and-white scientific illustrations - Up-to-date species accounts and color-coded range maps - ID boxes to help place individual species their appropriate category Compact, richly illustrated, and written in a highly accessible manner, Pocket Guide to the Amphibians and Reptiles of Costa Rica is a must-have reference for those familiar with or new to the world of tropical herpetology. Concise yet comprehensive, this beautifully illustrated field guide covers all 470 species of amphibians and reptiles found in Costa Rica. It will soon become indispensable reading for naturalists and tourists alike. -- Piotr Naskrecki, Harvard University, author of Hidden Kingdom Once again, Twan Leenders delivers a visually stimulating field guide that reflects years of field study and a passion for his subject. The splendor of these pages makes manifest the author's love for our native biodiversity. -- Juan G. Abarca, National University of Costa Rica Once again, Twan Leenders delivers a visually stimulating field guide that reflects years of field study and a passion for his subject. The splendor of these pages makes manifest the author's love for our native biodiversity. -- Juan G. Abarca, National University of Costa Rica Twan Leenders is Director of Conservation at the Chautauqua Watershed Conservancy, a regional land trust in western New York. He is the author of Amphibians of Costa Rica and Reptiles of Costa Rica and coauthor of The Wildlife of Costa Rica.