Ecology.

The more than 1,000 species descriptions in this guide include information on range and habitat such as depths, bottom types, water temperatures, and salinity.

Offers concise descriptions and detailed illustrations of the diverse mammal species and inlcudes specific guidelines on techniques of field identification.

Field guide of Freshwater fish.

The most common snakes, turtles, lizards, frogs and toads, salamanders, and crocodilia of North America.