There are occasional reports of individuals found in higher elevations. The Western Diamondback is a stubborn snake and has a tendency to stand its ground. As with all rattlesnakes, this species is venomous. It ranks as one of the most dangerous snakes in the world. Bites are serious and potentially deadly if medical treatment is not reached immediately.
Rattlesnakes coil and rattle their tail as a defensive warning to potential predators.
Sometimes, the snake will elevate itself off the ground to make itself look bigger and more fearsome. Rattlesnakes are principally nocturnal, but will be active in the daytime during the spring months when temperatures are cooler at night. This species is known to bask in the late afternoon sun. Its diet consists of rabbits, mice, rats, gophers, sparrows, and ground squirrels. The babies are born during late July or August.