A comprehensive source for discovering, identifying, and learning about any of the state's fifty-three amphibian and reptile species, from the common American Toad to the little-seen Western Ratsnake. Including current information about designations of species in need of protection, this reference covers the latest research and work on environmental threats and conservation measures, such as the deformed frog phenomenon, turtle-protection legislation, climate change, and habitat restoration. With more than two hundred photographs, written descriptions, county-based maps, habitat and distribution data, life histories, and circular keys to adult and larval specimens, the book brings readers up to date on Minnesota's new species and changes to scientific names.