Encyclopedia of Animals

The sheer varity of living animal species is staggering. So too is the diversity of form, behavior, and adaptation to environmental conditions they display. Even in seemingly in hospitable environments-the frozen vastness of the Artic and Antarctic, the arid heat of deserts, and the rocky bleakness of some alpine regions-countless species of animals have evolved characteristics that enable them not only to survive, but also positively to florish. This encyclopedia presents a wide-ranging survey of three major groups of living things. 1. Mammals, 2. Modern reptiles and Amphibians.