Montana
Snakes in Custer County
6 species have been documented here, 1 of them venomous.
Venomous snakes in Custer 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 Custer County
Prairie Rattlesnake
Crotalus viridis
Venomous
North American Racer
Coluber constrictor
Harmless
Gopher Snake
Pituophis catenifer
Harmless
Plains Garter Snake
Thamnophis radix
Harmless
Western Milksnake
Lampropeltis gentilis
Harmless
Plains Hognose Snake
Heterodon nasicus
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Custer County: FAQ
- Are there venomous snakes in Custer County, Montana?
- Yes. 1 venomous snake species has verified records in Custer County, Montana, including Prairie Rattlesnake. Most snakes in Custer County, Montana, however, are harmless.
- How many snake species live in Custer County, Montana?
- 6 snake species have verified records in Custer County, Montana, of which 1 is venomous.
- What is the most commonly seen snake in Custer County, Montana?
- The Prairie Rattlesnake is the most frequently reported snake in Custer County, Montana, based on verified wildlife observations.
- What should I do if I see a venomous snake in Custer 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.