Utah
Snakes in San Juan County
20 species have been documented here, 2 of them venomous.
Venomous snakes in San Juan County
Full guide & what to do if bitten →
Prairie RattlesnakeCrotalus viridisVenomousHeavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Western RattlesnakeCrotalus oreganusVenomousHeavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Every snake recorded in San Juan County
Gopher Snake
Pituophis catenifer
Harmless
Western Terrestrial Garter Snake
Thamnophis elegans
Harmless
Prairie Rattlesnake
Crotalus viridis
Venomous
Western Rattlesnake
Crotalus oreganus
Venomous
Striped Whipsnake
Masticophis taeniatus
Harmless
No photo
Mexican Whip Snake
Masticophis lineatus
Harmless
Glossy Snake
Arizona elegans
Harmless
California King Snake
Lampropeltis californiae
Harmless
Pine Snake
Pituophis melanoleucus
Harmless
Black-necked Garter Snake
Thamnophis cyrtopsis
Harmless
Sinaloan Nightsnake
Hypsiglena torquata
Harmless
Desert Nightsnake
Hypsiglena chlorophaea
Harmless
Eastern Kingsnake
Lampropeltis getula
Harmless
Western Milksnake
Lampropeltis gentilis
Harmless
Smooth Greensnake
Opheodrys vernalis
Harmless
Western Patch-nosed Snake
Salvadora hexalepis
Harmless
Sierra Garter Snake
Thamnophis couchii
Harmless
Mexican Garter Snake
Thamnophis eques
Harmless
Southwestern Blackhead Snake
Tantilla hobartsmithi
Harmless
Tantilla selmae
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.