The prairie rattlesnake, also known as the western rattlesnake, is a venomous snake species native to North America. This snake has a distinctive rattle on its tail that warns potential predators or threats. It is also known to have several synonyms, including the Great Plains rattlesnake, western massasauga, Sonoran rattlesnake, and Arizona diamond rattlesnake. The Great Plains rattlesnake is the most common synonym for the prairie rattlesnake due to its habitat mainly found in the Great Plains region of North America. The western massasauga is also a synonym due to its similar appearance and habitat to the prairie rattlesnake. The Sonoran rattlesnake and Arizona diamond rattlesnake are both common synonyms found in the southwestern United States and Mexico.