National Audubon Society Field Guide to North American Mammals: (Revised and Expanded)

The most comprehensive field guide available to North American mammals—a must-have for any enthusiast's day pack or home library—from the go-to reference source for over 18 million nature lovers. From a stop-action photograph of the amazing flying squirrel to Big Horn Sheep perched on a rock face, this guide puts the world of mammals in your ha...