Oklahoma is home to seven species of venomous snakes, all classified as pit vipers. These snakes include the Prairie Rattlesnake, Timber Rattlesnake, Western Cottonmouth, and others. Each species shares common traits, such as triangular-shaped heads and heat-sensing pits. Various habitats are inhabited by these snakes, from wetlands to forested areas. Identifying characteristics, including coloration and patterns, assist in recognizing each species.