Montana
Snakes in Stillwater County
4 species have been documented here, 1 of them venomous.
Venomous snakes in Stillwater 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 Stillwater County

Prairie Rattlesnake
Crotalus viridis
Venomous

Gopher Snake
Pituophis catenifer
Harmless

Western Terrestrial Garter Snake
Thamnophis elegans
Harmless

North American Racer
Coluber constrictor
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Stillwater County: FAQ
- Are there venomous snakes in Stillwater County, Montana?
- Yes. 1 venomous snake species has verified records in Stillwater County, Montana, including Prairie Rattlesnake. Most snakes in Stillwater County, Montana, however, are harmless.
- How many snake species live in Stillwater County, Montana?
- 4 snake species have verified records in Stillwater County, Montana, of which 1 is venomous.
- What is the most commonly seen snake in Stillwater County, Montana?
- The Prairie Rattlesnake is the most frequently reported snake in Stillwater County, Montana, based on verified wildlife observations.
- What should I do if I see a venomous snake in Stillwater County, Montana?
- 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.