Wyoming
Snakes in Niobrara County
7 species have been documented here, 1 of them venomous.
Venomous snakes in Niobrara 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 Niobrara County

Plains Hognose Snake
Heterodon nasicus
Harmless

Pine Snake
Pituophis melanoleucus
Harmless

Prairie Rattlesnake
Crotalus viridis
Venomous

North American Racer
Coluber constrictor
Harmless

Gopher Snake
Pituophis catenifer
Harmless

Western Terrestrial Garter Snake
Thamnophis elegans
Harmless

Plains Garter Snake
Thamnophis radix
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Niobrara County: FAQ
- Are there venomous snakes in Niobrara County, Wyoming?
- Yes. 1 venomous snake species has verified records in Niobrara County, Wyoming, including Prairie Rattlesnake. Most snakes in Niobrara County, Wyoming, however, are harmless.
- How many snake species live in Niobrara County, Wyoming?
- 7 snake species have verified records in Niobrara County, Wyoming, of which 1 is venomous.
- What is the most commonly seen snake in Niobrara County, Wyoming?
- The Plains Hognose Snake is the most frequently reported snake in Niobrara County, Wyoming, based on verified wildlife observations.
- What should I do if I see a venomous snake in Niobrara County, Wyoming?
- 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.