Carl and Evelyn Ernst have completely revised their landmark reference Venomous Reptiles of North America to present the most comprehensive review of these animals in years. Volume One of this definitive work presents dramatically improved species accounts of the venomous lizards and elapid and viperid snakes found north of Mexico's twenty-fifth parallel. Volume Two will cover the twenty-one rattlesnakes found in the United States, Canada, and, for the first time, species found only in northern Mexico. Ernst and Ernst have painstakingly researched and verified the highly valuable and detailed information in this volume, including every detail of the lives of these fascinating and sometimes deadly animals. Venomous Reptiles of the United States, Canada, and Northern Mexico provides facts on each animal's diet, reproductive behavior, physiology, ecology, and conservation status. The book also covers details on snakebite, how venom is delivered, venom composition, antivenom production, and medical treatments of envenomation. Each species account includes vivid photographs that aid with identification and detailed maps that show the species range. Venomous Reptiles of the United States, Canada, and Northern Mexico represents the latest research on these animals and includes the most extensive bibliography of literature on the subject. Anyone with an interest in venom, snakes, or herpetology in general will find a wealth of information within the pages of these impressive volumes.