Share your observations

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

Rare animals
Find rare and non-game animals.
Rare plants
Learn about plants on the Natural Heritage Working List.
Rare lichens
Discover Wisconsin's lichens.
Natural communities
Explore Wisconsin's natural communities.
Other features
Discover unique resources.
Eagle license plate

Help care for rare plants and animals by ordering an Endangered Resources plate.

Contact information
For information on Wisconsin's rare vertebrate animals, contact:
Rich Staffen
Conservation Biologist
For information on Wisconsin's rare invertebrates, contact:
Jay Watson
Conservation Biologist

Wisconsin's rare mammals

Mammals on Wisconsin's Natural Heritage Working List – last revised May 2016. Life history, where they are found in the state, photos and management information is available for many of these species. Please consider sharing your observations [exit DNR] with the Wisconsin Natural Heritage Inventory

Have you seen a spotted skunk or white-tailed jackrabbit? If so, we want to hear from you. See the brochures below for details.

NOTE: This list provides information on our rare or uncommon mammals in Wisconsin. This is not a comprehensive list of all mammals that occur in the state. For a full list and information on all mammals in Wisconsin please see the UW-Stevens Point Mammal page [exit DNR].

Click on the table headings to sort the table or sort taxonomically. Choose a species from the list to explore information for that animal. View the table key.
Scientific Name Common Name Global
WWAP Mapped in NHI
Myotis lucifugus Little Brown Bat G3G4 S2S4 THR SGCN Y
Microtus pinetorum Woodland Vole G5 S2 SC/N SGCN Y
Microtus ochrogaster Prairie Vole G5 S2 SC/N SGCN Y
Martes americana American Marten G5 S2 END SGCN Y
Lasionycteris noctivagans Silver-haired Bat G3G4 S3 SC/N SGCN Y
Glaucomys sabrinus Northern Flying Squirrel G5 S3 SC/P SGCN Y
Eptesicus fuscus Big Brown Bat G5 S2S4 THR SGCN Y
Sorex palustris American Water Shrew G5 S3 SC/N SGCN Y
Poliocitellus franklinii Franklin's Ground Squirrel G5 S2 SC/N SGCN Y
Peromyscus maniculatus bairdii Prairie Deer Mouse G5T5 S2S3 SC/N SGCN Y
Perimyotis subflavus Tricolored Bat G3G4 S1S3 THR SGCN Y
Napaeozapus insignis Woodland Jumping Mouse G5 S2 SC/N SGCN Y
Myotis septentrionalis Northern Long-eared Bat G2G3 S1S2 LT THR SGCN Y
Reithrodontomys megalotis Western Harvest Mouse G5 S3 m-SIN N
Peromyscus maniculatus gracilis Woodland Deer Mouse G5TNR S3S4 m-SIN N
Neotamias minimus Least Chipmunk G5 S3S4 m-SIN N
Mustela nivalis Least Weasel G5 SU r-SIN N
Lynx canadensis Canada Lynx G5 SNA LT SC/FL N
Lepus americanus Snowshoe Hare G5 S4 m-SIN N
Lasiurus cinereus Hoary Bat G3G4 S3 m-SIN N
Lasiurus borealis Eastern Red Bat G3G4 S3 m-SIN N

Rank and status: To learn more about species rank and status, see the working list key. WWAP: (Wisconsin Wildlife Action Plan): SGCN (Species of Greatest Conservation Need) and monitoring and ranking SIN (Species with Information Needs). Mapped in NHI: (Natural Heritage Inventory): Y = Observations of these species are mapped into the NHI database.

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Last revised: Thursday, December 22, 2022