South Dakota
Snakes in Bennett County
6 species have been documented here, 1 of them venomous.
Venomous snakes in Bennett 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 Bennett County

Plains Garter Snake
Thamnophis radix
Harmless

Common Garter Snake
Thamnophis sirtalis
Harmless

North American Racer
Coluber constrictor
Harmless

Gopher Snake
Pituophis catenifer
Harmless

Prairie Rattlesnake
Crotalus viridis
Venomous

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