Colorado
Snakes in Rio Grande County
3 species have been documented here, 1 of them venomous.
Venomous snakes in Rio Grande 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 Rio Grande County

Western Terrestrial Garter Snake
Thamnophis elegans
Harmless

Prairie Rattlesnake
Crotalus viridis
Venomous

Gopher Snake
Pituophis catenifer
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Rio Grande County: FAQ
- Are there venomous snakes in Rio Grande County, Colorado?
- Yes. 1 venomous snake species has verified records in Rio Grande County, Colorado, including Prairie Rattlesnake. Most snakes in Rio Grande County, Colorado, however, are harmless.
- How many snake species live in Rio Grande County, Colorado?
- 3 snake species have verified records in Rio Grande County, Colorado, of which 1 is venomous.
- What is the most commonly seen snake in Rio Grande County, Colorado?
- The Western Terrestrial Garter Snake is the most frequently reported snake in Rio Grande County, Colorado, based on verified wildlife observations.
- What should I do if I see a venomous snake in Rio Grande 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.