Wisconsin
Snakes in Dane County
10 species have been documented here, 1 of them venomous.
Venomous snakes in Dane 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.
Every snake recorded in Dane County
Common Garter Snake
Thamnophis sirtalis
Harmless
DeKay's Brownsnake
Storeria dekayi
Harmless
Plains Garter Snake
Thamnophis radix
Harmless
Red-bellied Snake
Storeria occipitomaculata
Harmless
Eastern Milksnake
Lampropeltis triangulum
Harmless
Eastern Foxsnake
Pantherophis vulpinus
Harmless
Common Watersnake
Nerodia sipedon
Harmless
Gopher Snake
Pituophis catenifer
Harmless
Eastern Hognose Snake
Heterodon platirhinos
Harmless
Timber Rattlesnake
Crotalus horridus
Venomous
Compiled from verified GBIF & iNaturalist observations. Informational only.
Snakes in Dane County: FAQ
- Are there venomous snakes in Dane County, Wisconsin?
- Yes. 1 venomous snake species has verified records in Dane County, Wisconsin, including Timber Rattlesnake. Most snakes in Dane County, Wisconsin, however, are harmless.
- How many snake species live in Dane County, Wisconsin?
- 10 snake species have verified records in Dane County, Wisconsin, of which 1 is venomous.
- What is the most commonly seen snake in Dane County, Wisconsin?
- The Common Garter Snake is the most frequently reported snake in Dane County, Wisconsin, based on verified wildlife observations.
- What should I do if I see a venomous snake in Dane County, Wisconsin?
- Keep your distance and do not try to catch or kill it. Most bites happen when people handle or corner a snake. If someone is bitten, contact local emergency services or poison control immediately.