This Online Guide to North American Mammals is a complete interactive guide to the ways of mammals: identification of species, their feeding and social behaviors, breeding habitats, chosen habitats, and geographical range, as well as the tracks and other evidence that mark their presence when they cannot be seen. more about the guide
e.g. Bears, Bats, Hoofed Mammals...
e.g. Free-tailed Bats, Eared Seals, Pronghorns...