What are the differences between the Western and Eastern Diamondback Rattlesnakes?

The Western Diamondback Rattlesnake (Crotalus atrox) typically has a more pronounced diamond pattern on its back and can be found in a broader range of habitats across the southwestern United States. In contrast, the Eastern Diamondback Rattlesnake (Crotalus adamanteus) is generally larger, with a more robust body and a distinct yellowish or brownish background color featuring dark brown or black diamonds. Additionally, the Eastern variety is primarily found in the southeastern United States, particularly in coastal plains and pine forests, while the Western variant inhabits arid regions and deserts. Their venom composition also differs, with the Eastern being more potent, although both species pose significant risks to humans.