The Companion Guide to Trackards for North American Mammals is part of a field-tested track and scat identification system. The Companion Guide can be used to interpret information on the Trackards, as well as to view additional images of North American mammals that are distributed widely over the continent. It offers comparisons between taxa which aren't included in the Trackards due to lack of space. All images in both The Companion Guide and Trackards have been produced from photographs of actual tracks and scat of live, free-ranging wild animals. The Companion Guide also contains information about track morphology, the similarity of sign of one species to that of other species, and habitat preferences. No images have been copied from other sources, a practice that has perpetuated many inaccuracies in other tracking books and related resources. The Trackards/Companion Guide identification system has been field tested and revised for over a decade, resulting in the best resource on the market for the successful identification of mammal tracks. Tracks and sign for the following animals are included in the system: Black Bear, Beaver, Moose, Snowshoe Hare, River Otter, Fisher, White-tailed Deer, Eastern Coyote, Porcupine, Raccoon, Bobcat, Opossum, Woodchuck, Red Fox, Muskrat, Gray Fox, Mink, Cottontail Rabbit, Striped Skunk, Gray Squirrel, Weasel, Red Squirrel, Chipmunk, Mouse, Vole, and Shrew. The book-card system should appeal to any person interested in natural history, and will be especially attractive to backpackers and winter sports enthusiasts who wonder what animal made the trails they encounter in the snow. Schools at any level may adapt the system for instruction in environmental science classes. Higher educational students may purchase the whole system while teachers of lower grades may purchase sets of the Trackards for their classes while using The Companion Guide as a teacher's reference. The Companion Guide to Trackards for North American Mammals are 5.5 x 8.5 inches and can easily be packed in a large pocket for ease in transportation and usability.