A comprehensive collection of North American snake pictures is available at the website of the University of Pittsburgh. This collection includes images of boas, pythons, cobras and vipers, among others.
The website also features detailed information about North American snake species, such as taxonomic data and anatomical descriptions. The most populous species listed is Colubridae, or colubrid snakes. Of the more than 2,000 global species, this list comprises 102 North American varieties.
The Discover Life website, meanwhile, has a snake identification tool. Here, users can establish a snake's species based on its physical attributes, including top and bottom colors and patterns, as well as scale texture and geographical location.