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SHOWING RECORD: 6 of 17   Prairie Rattlesnake
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image: Prairie Rattlesnake
Photograph by W. Perry Conway/Corbis
Prairie Rattlesnake

Crotalus viridis

First Noted by Expedition
June 15, 1805, Great Falls, Cascade County, Montana.

Usually greenish to brownish (some populations pinkish to reddish-brown) above. Well-defined brown blotches down midline of back; white to yellowish lines on head slanting backward. Length: 0.8-3.8 ft (0.3-1.1 m).

Great Plains grassland to rocky outcrops, talus slopes, and prairie dog towns.

Extreme western Iowa to the Rockies, southern Alberta to northern Mexico.

The prairie rattlesnake, which occupies a large swathe of the central part of North America, used to be considered a subspecies of the western rattlesnake, Crotalus oreganus.

Species information from enature.com

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