Idaho
Snakes in Ada County
13 species have been documented here, 2 of them venomous.
Venomous snakes in Ada 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.
Prairie RattlesnakeCrotalus viridisVenomousHeavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Every snake recorded in Ada County
Gopher Snake
Pituophis catenifer
Harmless
Western Terrestrial Garter Snake
Thamnophis elegans
Harmless
Western Rattlesnake
Crotalus oreganus
Venomous
North American Racer
Coluber constrictor
Harmless
Striped Whipsnake
Masticophis taeniatus
Harmless
No photo
Mexican Whip Snake
Masticophis lineatus
Harmless
Common Garter Snake
Thamnophis sirtalis
Harmless
Pine Snake
Pituophis melanoleucus
Harmless
Prairie Rattlesnake
Crotalus viridis
Venomous
Northern Rubber Boa
Charina bottae
Harmless
Desert Nightsnake
Hypsiglena chlorophaea
Harmless
Ground Snake
Sonora semiannulata
Harmless
Sinaloan Nightsnake
Hypsiglena torquata
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.