Colorado
Snakes in Rio Blanco County
6 species have been documented here, 2 of them venomous.
Venomous snakes in Rio Blanco 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 Rio Blanco County
Western Terrestrial Garter Snake
Thamnophis elegans
Harmless
Western Rattlesnake
Crotalus oreganus
Venomous
Gopher Snake
Pituophis catenifer
Harmless
Prairie Rattlesnake
Crotalus viridis
Venomous
Striped Whipsnake
Masticophis taeniatus
Harmless
North American Racer
Coluber constrictor
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Rio Blanco County: FAQ
- Are there venomous snakes in Rio Blanco County, Colorado?
- Yes. 2 venomous snake species have verified records in Rio Blanco County, Colorado, including Western Rattlesnake, Prairie Rattlesnake. Most snakes in Rio Blanco County, Colorado, however, are harmless.
- How many snake species live in Rio Blanco County, Colorado?
- 6 snake species have verified records in Rio Blanco County, Colorado, of which 2 are venomous.
- What is the most commonly seen snake in Rio Blanco County, Colorado?
- The Western Terrestrial Garter Snake is the most frequently reported snake in Rio Blanco County, Colorado, based on verified wildlife observations.
- What should I do if I see a venomous snake in Rio Blanco County, Colorado?
- 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.