Was that footprint left by a fox or a wolf?  A moose or a marten?  A white-tailed deer or a peccary, perhaps?  Was that pile of droppings deposited by a bobcat or a fox?  Covering nearly 150 of the continent's most common or characteristic species of mammals, birds, reptiles, and amphibians north of Mexico, Scats and Tracks of North America helps you determine what has passed your way and could still be nearby.

Look inside for:

* Easy-reference descriptions with precise measurements and detailed illustrations of scats, tracks and gait patterns

* An identification key and a glossary of tracking terms

* Rare species of particular interest

* Thorough instructions for documenting your finds

James C. Halfpenny, PhD, is one of the world's leading experts on animal tracking and lives in Gardiner, Montana, at the edge of Yellowstone National Park.  Todd Telander, a natural science illustrator and wildlife artist, lives in Walla Walla, Washington.