This edition includes 100 color photographs of tracks and sign, more than 1,000 line drawings, and updated nomenclature for all the mammals of North America. The text includes descriptions of habits, habitats, tracks, signs, and ranges and is filled with natural history stories.

Family didelphidae : opossums -- Family soricidae : shrews -- Family talpidae : moles -- Order chiroptera : bats -- Family dasypodidae : armadillos -- Family ochotonidae : pikas, Family leporidae : hares and rabbits -- Order rodentia : rodents -- Family canidae : dogs, foxes, and wolves -- Family ursidae : bears -- Family otariidae : hair seal, Family phocidae : eared seals -- Family procyonidae : raccoons, ringtails, and coatis -- Family mustelidae : weasels, otters, and badgers -- Family mephitidae : skunks -- Family felidae : cats -- Superorder ungulata : hoofed animals.