South Dakota
Snakes in Todd County
6 species have been documented here, 1 of them venomous.
Venomous snakes in Todd 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 Todd County
Gopher Snake
Pituophis catenifer
Harmless
North American Racer
Coluber constrictor
Harmless
Plains Garter Snake
Thamnophis radix
Harmless
Common Garter Snake
Thamnophis sirtalis
Harmless
Prairie Rattlesnake
Crotalus viridis
Venomous
Plains Hognose Snake
Heterodon nasicus
Harmless
Compiled from verified GBIF & iNaturalist observations. Informational only.