The Western Diamondback Rattlesnake is a venomous pit viper native to a large area of southcentral and southwestern United States
and northern Mexico. It has several other common names.
(The Eastern Diamondback is found in the southeast around Florida and areas immediately north.)
It can grow to over 5 feet (1.5 metres). It usually has a white hatching pattern or diamond shapes on a dark grey or brown background.
Thousands of humans in the US and Mexico receive bites from this rattlesnake each year resulting in a few deaths.