Wisconsin
Snakes in Walworth County
9 species have been documented here, 1 of them venomous.
Venomous snakes in Walworth County
Full guide & what to do if bitten →
Eastern MassasaugaSistrurus catenatusVenomousStout, dark-blotched body, nine large scales on the crown, and a small rattle.
Every snake recorded in Walworth County
Common Watersnake
Nerodia sipedon
Harmless
Common Garter Snake
Thamnophis sirtalis
Harmless
Red-bellied Snake
Storeria occipitomaculata
Harmless
DeKay's Brownsnake
Storeria dekayi
Harmless
Eastern Milksnake
Lampropeltis triangulum
Harmless
Eastern Hognose Snake
Heterodon platirhinos
Harmless
Smooth Greensnake
Opheodrys vernalis
Harmless
Plains Garter Snake
Thamnophis radix
Harmless
Eastern Massasauga
Sistrurus catenatus
Venomous
Compiled from verified GBIF & iNaturalist observations. Informational only.