Sistrurus

Sistrurus is a genus of venomous pit vipers commonly known as massasaugas, native to North America. These snakes are characterized by their stout bodies, distinctive head shape, and heat-sensing pits between their eyes and nostrils. They typically have a muted color pattern of browns, grays, or black with blotched or banded markings, which help them blend into their environment. Sistrurus species are generally small to medium-sized and venomous, using their bites for defense and hunting small mammals, amphibians, and birds. They play a vital role in controlling pest populations and are important for ecological balance.