photo by: Leslie Bigos
Crotalus o. oreganus Northern Pacific rattlesnake
Key ID features:
- heavy bodied with large dark spots
- wide triangular head
- distinct eye stripe
- rattle at tail tip
- venomous.
- ventral (belly) scales light colored with dark blotches
- dorsal (back) scales- strongly keeled
- vertical pupil
- has a heat-sensitive pit on face
Cryptic coloration varies on habitat.
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- photo provided: Susan Ballinger
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- Ventral scales: white with dark blotches
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- Vertical pupil, eye stripe, heat sensitive pit
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- Strongly keeled dorsal scales
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- Bands on tail; rattle at tail tip
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- Ventral scales: white
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- Rattlesnake Identification
