Amphibians and reptiles (herpetofauna) are a significant but much neglected component of the natural economy of the province of Alberta. This second edition, which continues both as a field guide and a comprehensive natural history, builds on the strengths of the first, with a richly illustrated text, and colour photographs of the species taken by renowned wildlife photographer, Dr. Wayne Lynch. The award-winning first edition received recognition in the Emerald Awards for Environmental Excellence. This second edition has been thoroughly revised and updated. Nomenclature has been changed to reflect current thinking in the field. New photographs have been added, and maps and illustrations have been updated.