What is Western rattlesnake?
'''Western rattlesnake''' may refer to: * ''[[Crotalus oreganus]]'', a venomous pitviper species found in North America in the western United States, parts of British Columbia and northwestern Mexico * ''[[Crotalus viridis]]'', a.k.a. the prairie rattlesnake, a venomous pitviper species native to the western United States, southern Alberta, Canada, and northern Mexico {{disambig}}