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Northern Pacific Rattlesnake

Crotalus oreganus oreganus


The color pattern of the typical form, C. o. oreganus, has a dark-brown, dark-gray, olive-brown, or sometimes black or pale yellowish ground color overlaid dorsally with a series of large, dark blotches with uneven white edges. These blotches are also wider than the spaces that separate them. Additionally, a lateral series of blotches, usually darker than the dorsal blotches, is clearly visible on all but the darkest specimens. The first rings of the tail are about the same color as the last body blotches, but these rings become progressively darker; the last two rings, at the base of the tail, are usually black. The belly is pale yellow, usually with brown spots. A large, dark-brown blotch on the snout has a pale border behind it that forms transverse bars on the supraoculars. There is a dark brown postocular stripe with a white border that extends from the eye to around the angle of the jaw.


Arid land next to mountains. Found in the flor under a tree.

1 Species ID Suggestions

AshleyT 6 years ago
Northern Pacific Rattlesnake
Crotalus oreganus oreganus Northern Pacific Rattlesnake - Crotalus oreganus oreganus

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The MnMs
The MnMs 6 years ago

Hi Jellis, is so weird because I thought I had already added Ashleys ID in the description and now it shows again as if not (?). Can you please send me the link for the mission you mention? It is not easy to look for local missions..
Thanks and Merry Xmas! :-)

Jellis 6 years ago

Also there is a mission for snakes and one for reptiles.

Jellis 6 years ago

AshleyT is correct. Of the 3 subspecies of central part of California the Northern, Southern and Great Basin, your shot of the tail nailed it as a Northern Pacific.

The MnMs
Spotted by
The MnMs

California, USA

Spotted on Sep 16, 2014
Submitted on Dec 12, 2014

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