There are many synonyms for the Crotalus Atrox, which is commonly known as the Western Diamondback Rattlesnake. Some of the most commonly used synonyms include Southern Pacific Rattlesnake, Arizona Rattlesnake, and Texas Rattlesnake. Other synonyms for this species of rattlesnake include Western Rattlesnake, Diamond rattlesnake, and Coon-tail rattlesnake, among others. These synonyms are often used interchangeably, depending on the location and context in which the snake is being discussed. Despite the different names, all of these synonyms refer to the same venomous snake species, which can be found in many areas of the southwestern United States and parts of northern Mexico.