Wisconsin
Snakes in Sauk County
13 species have been documented here, 2 of them venomous.
Venomous snakes in Sauk County
Full guide & what to do if bitten →
Timber RattlesnakeCrotalus horridusVenomousHeavy body, broad triangular head, vertical (cat-like) pupils, and a segmented keratin rattle at the tail tip.
Eastern MassasaugaSistrurus catenatusVenomousStout, dark-blotched body, nine large scales on the crown, and a small rattle.
Every snake recorded in Sauk County
Common Garter Snake
Thamnophis sirtalis
Harmless
Timber Rattlesnake
Crotalus horridus
Venomous
Common Watersnake
Nerodia sipedon
Harmless
Eastern Hognose Snake
Heterodon platirhinos
Harmless
Eastern Milksnake
Lampropeltis triangulum
Harmless
DeKay's Brownsnake
Storeria dekayi
Harmless
Red-bellied Snake
Storeria occipitomaculata
Harmless
North American Racer
Coluber constrictor
Harmless
Gopher Snake
Pituophis catenifer
Harmless
Eastern Foxsnake
Pantherophis vulpinus
Harmless
Smooth Greensnake
Opheodrys vernalis
Harmless
Gray Ratsnake
Pantherophis spiloides
Harmless
Eastern Massasauga
Sistrurus catenatus
Venomous
Compiled from verified GBIF & iNaturalist observations. Informational only.