Idaho
Snakes in Canyon County
7 species have been documented here, 1 of them venomous.
Venomous snakes in Canyon County
Full guide & what to do if bitten →
Western RattlesnakeCrotalus oreganusVenomousHeavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Every snake recorded in Canyon County

Gopher Snake
Pituophis catenifer
Harmless

Western Terrestrial Garter Snake
Thamnophis elegans
Harmless

Common Garter Snake
Thamnophis sirtalis
Harmless

North American Racer
Coluber constrictor
Harmless

Western Rattlesnake
Crotalus oreganus
Venomous

Striped Whipsnake
Masticophis taeniatus
Harmless

Ground Snake
Sonora semiannulata
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Canyon County: FAQ
- Are there venomous snakes in Canyon County, Idaho?
- Yes. 1 venomous snake species has verified records in Canyon County, Idaho, including Western Rattlesnake. Most snakes in Canyon County, Idaho, however, are harmless.
- How many snake species live in Canyon County, Idaho?
- 7 snake species have verified records in Canyon County, Idaho, of which 1 is venomous.
- What is the most commonly seen snake in Canyon County, Idaho?
- The Gopher Snake is the most frequently reported snake in Canyon County, Idaho, based on verified wildlife observations.
- What should I do if I see a venomous snake in Canyon County, Idaho?
- Keep your distance and do not try to catch or kill it. Most bites happen when people handle or corner a snake. If someone is bitten, contact local emergency services or poison control immediately.