Montana
Snakes in Big Horn County
7 species have been documented here, 1 of them venomous.
Venomous snakes in Big Horn 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.
Every snake recorded in Big Horn County
Gopher Snake
Pituophis catenifer
Harmless
North American Racer
Coluber constrictor
Harmless
Plains Hognose Snake
Heterodon nasicus
Harmless
Common Garter Snake
Thamnophis sirtalis
Harmless
Prairie Rattlesnake
Crotalus viridis
Venomous
Western Terrestrial Garter Snake
Thamnophis elegans
Harmless
Pine Snake
Pituophis melanoleucus
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.