The Western Diamondback Rattlesnake (Crotalus atrox) is a common and well-known venomous snake found in the Sonoran Desert, recognized by its distinctive diamond-shaped patterns and rattling tail.

The Western Diamondback Rattlesnake is one of the most widespread and iconic rattlesnakes in the Sonoran Desert, spanning Arizona, California, New Mexico, Texas, and Mexico. It grows up to 4-5 feet (1.2-1.5 meters) and is easily identified by its dark diamond-shaped markings, heavy body, and characteristic rattle used as a warning signal. This snake is an ambush predator, preying on rodents, birds, and reptiles. It plays a vital role in the ecosystem by controlling pest populations. Although venomous, it avoids human interaction and typically strikes only in self-defense.