There are 32 species of
rattlesnakes that range
from southern Canada to Argentina and 16 species live in the US (Eastern
Diamondback, Western
Diamondback, Sidewinder, Lower California, Timber, Rock, Speckled, Blacktail, Twin - spotted, Red Diamond, Mojave, Tiger, Western, Ridgenose, Massasauga, and Pigmy
rattlesnake).