Descriptions of 380 species include size, weight, color, markings, number of teeth, habitat, habits, and comparisons with similar species. Superb color illustrations and line drawings show 230 animals. Range maps as well as photos of skulls and drawings of animal tracks, dens, nests, and burrows round out the wealth of information given in "the best general guide to all of North America" (Peter Warshall, Whole Earth Review).
Richard Philip Grossenheider is a contributor for Houghton Mifflin Harcourt titles including:
Peterson First Guides to Mammals of North America.William H. Burt is a contributor for the following Houghton Mifflin Company Title: A Field Guide to Mammals
Roger Tory Peterson, one of the world's greatest naturalists, received every major award for ornithology, natural science, and conservation as well as numerous honorary degrees, medals, and citations, including the Presidential Medal of Freedom. The Peterson Identification System has been called the greatest invention since binoculars. These editions include updated material by Michael O'Brien, Paul Lehman, Bill Thompson III, Michael DiGiorgio, Larry Rosche, and Jeffrey A. Gordon.