Prairie rattlesnake - AbsoluteAstronomy.com

Prairie rattlesnake may refer to:

Crotalus viridis
Crotalus viridis
Crotalus viridis is a venomous pitviper species native to the western United States, southwestern Canada, and northern Mexico. Currently, nine subspecies are recognized, including the nominate subspecies described here.-Description:...

, a.k.a. the plains rattlesnake, a venomous pitviper species native to the western United States, southwestern Canada, and northern Mexico.
Sistrurus catenatus
Sistrurus catenatus
Sistrurus catenatus is a venomous pitviper species found primarily in the United States. Three subspecies are currently recognized, including the nominate subspecies described here.-Description:...

, a.k.a. the massasauga, a venomous pitviper species found primarily in the United States.

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