Wisconsin
Snakes in Marathon County
6 species have been documented here, 1 of them venomous.
Venomous snakes in Marathon 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 Marathon County
Common Garter Snake
Thamnophis sirtalis
Harmless
Red-bellied Snake
Storeria occipitomaculata
Harmless
Eastern Foxsnake
Pantherophis vulpinus
Harmless
Eastern Milksnake
Lampropeltis triangulum
Harmless
Ring-necked Snake
Diadophis punctatus
Harmless
Eastern Massasauga
Sistrurus catenatus
Venomous
Compiled from verified GBIF & iNaturalist observations. Informational only.