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