The book is conveniently arranged by orders, families, and species, and identification is facilitated by illustrated keys and by a series of dramatic color photographs. In the account of each species, the authors describe its distinguishing features, similar species with which it might be confused, its habitat, range, characteristic behavior, and life history. Much of the information in these accounts is drawn from the authors' personal observation of the animals in the wild and, in some cases, in captivity.