South Dakota
Snakes in Gregory County
8 species have been documented here, 1 of them venomous.
Venomous snakes in Gregory 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 Gregory County
Prairie Rattlesnake
Crotalus viridis
Venomous
Plains Garter Snake
Thamnophis radix
Harmless
Ring-necked Snake
Diadophis punctatus
Harmless
Gopher Snake
Pituophis catenifer
Harmless
North American Racer
Coluber constrictor
Harmless
Common Garter Snake
Thamnophis sirtalis
Harmless
Eastern Milksnake
Lampropeltis triangulum
Harmless
Western Foxsnake
Pantherophis ramspotti
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.