The western diamondback is a species of rattlesnake found primarily in the southwestern United States and northern Mexico. It is easily recognized by its distinctive diamond-shaped patterns along its back, which can vary in color from gray to brown. This snake typically grows to a length of 3 to 7 feet and is known for its rattle, which it uses as a warning signal when threatened. These snakes inhabit a variety of environments, including deserts, grasslands, and rocky areas. They are primarily nocturnal and feed on small mammals, birds, and reptiles. The western diamondback plays an important role in its ecosystem by helping to control rodent populations.