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SHOWING RECORD: 9 of 47   Western Rattlesnake
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image: Western Rattlesnake
Illustration by Gerald Rapp & Cullen Inc./Laszlo Kubinyi
Western Rattlesnake
(Northern Pacific Rattlesnake)

Crotalus viridis oreganus

Subspecies of Rattlesnake

First Noted by Expedition
April 25, 1806, near present-day Roosevelt, Klickitat County, Washington.

Size and color vary greatly. Brownish blotches down midline of back, generally edged with dark brown or black and often surrounded by light border. Length: 1.3-5.3 ft (0.4-1.6 m).

Brush-covered sand dunes on Pacific coast to timberline in the Rockies and the coniferous forests of the Northwest; rocky outcrops, talus slopes, and stony canyons; sea level to 11,000 ft (3,350 m).

South-central British Columbia south through Washington, Oregon, and Idaho to Baja California, western Colorado, southwestern Arizona, and extreme west-central New Mexico.

The western and prairie rattlesnakes were once considered a single species, C. viridis, called the western rattlesnake.

Species information from enature.com

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