The Western Diamondback Rattlesnake is a rattlesnake living in the arid landscapes of the Southwestern United States and Northern Mexico. It is known for its diamond-shaped patterns and robust size, reaching up to 4 feet. 

This type of rattlesnake earns its "coon tail" nickname due to its distinct tail pattern. The black and white banding resembles a raccoon's tail, hence the moniker.

The snake possesses a hemotoxic venom but uses it only when necessary. It is defensive and warns with its rattles before striking. 

The snake is more active during cooler hours and feeds on small mammals, birds, lizards, and other snakes.