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Share your observations

Share your observations of plants or non-game animals with the Natural Heritage Inventory.

Find
ways to reduce wildlife-human conflict and avoid wildlife damage.
Explore
Wisconsin's rare plants, animals and natural communities.
Discover
tips to manage your land for wildlife.
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about wildlife health and rehabilitation.
Contact information
For more information, contact:
Rori Paloski
608-264-6040

Snakes of Wisconsin

Snakes play very important roles in many natural communities as predator and prey. They are extremely valuable to the agricultural community by keeping grain eating mammals in check. Recent studies suggest that snakes are also valuable in reducing disease threats posed by high rodent populations. Many snake populations have declined in Wisconsin due to habitat loss and human persecution. Even today, people who do not understand or appreciate their value continue to needlessly kill them. Of Wisconsin's 22 species, 14 are considered "rare" and listed as endangered, threatened or special concern.

Common Name Scientific Name Family Status
Butler's Gartersnake Thamnophis butleri Colubridae Special Concern
Common Gartersnake Thamnophis sirtalis Colubridae Common
Common Watersnake Nerodia sipedon Colubridae Common
DeKay's brownsnake Storeria dekayi Colubridae Common
Eastern Foxsnake (Pine) Pantherophis vulpinus Colubridae Common
Eastern Hog-nosed Snake Heterodon platirhinos Colubridae Common
Eastern Massasauga Sistrurus catenatus catenatus Viperidae Endangered
Eastern Ribbonsnake Thamnophis sauritus Colubridae Endangered
Gophersnake (Bullsnake) Pituophis catenifer Colubridae Special Concern
Gray (Black) Ratsnake Pantherophis spiloides Colubridae Special Concern
Lined Snake Tropidoclonion lineatum Colubridae Special Concern
Milksnake Lampropeltis triangulum Colubridae Common
North American (Blue) Racer Coluber constrictor Colubridae Special concern
Northern Ring-necked Snake Diadophis punctatus edwardsii Colubridae Common
Plains Gartersnake Thamnophis radix Colubridae Special Concern
Prairie Ring-necked Snake Diadophis punctatus arnyi Colubridae Special Concern
Queensnake Regina septemvittata Colubridae Endangered
Red-bellied Snake Storeria occipitomaculata Colubridae Common
Smooth Greensnake Opheodrys vernalis Colubridae Common
Timber Rattlesnake Crotalus horridus Viperidae Special Concern
Western Ribbonsnake Thamnophis proximus Colubridae Endangered
Western Wormsnake Carphophis vermis Colubridae Special Concern
Last revised: Wednesday, October 18, 2017