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

Wisconsin's rare mammals

Mammals on Wisconsin's Natural Heritage Working List - last revised June 2011. These species are tracked by the Natural Heritage Inventory Program, and we welcome you to submit observations for these species.

Click on the table headings to sort the table or sort taxonomically. Choose a species from the list to explore information for that animal. See also the watch list species below.
Scientific Name Common Name Global
Canis lupus Gray Wolf G4G5 S4 LE SC/H Y
Cervus canadensis Elk G5 SNA SC/P
Eptesicus fuscus Big Brown Bat G5 S2S4 THR
Glaucomys sabrinus Northern Flying Squirrel G5 S3 SC/P Y
Martes americana American Marten G5 S2 END Y
Microtus ochrogaster Prairie Vole G5 S2 SC/N Y
Microtus pinetorum Woodland Vole G5 S2 SC/N Y
Myotis lucifugus Little Brown Bat G3 S2S4 THR
Myotis septentrionalis Northern Long-eared Bat G1G2 S1S2 LT THR Y
Napaeozapus insignis Woodland Jumping Mouse G5 S2S3 SC/N Y
Perimyotis subflavus Eastern Pipistrelle G3 S1S3 THR
Reithrodontomys megalotis Western Harvest Mouse G5 SU SC/N
Sorex palustris Water Shrew G5 S3 SC/N Y
Spermophilus franklinii Franklin's Ground Squirrel G5 S2 SC/N Y

Watch list Mammals

Mammals on the Natural Heritage Inventory's "watch list." Watch list species have experienced, or are believed to have experienced, a statewide or range-wide decline, but are not currently tracked in the Natural Heritage Inventory (NHI) database. The watch list includes newly discovered species for which origin and rarity need to be determined, certain animals designated as Species of Greatest Conservation Need (SGCN) in the Wisconsin Wildlife Action Plan, and species that were tracked in the past but proved more abundant, widespread, or less vulnerable than previously thought. Although watch list species are not actively tracked by NHI, occurrences documented during surveys are often stored by NHI, as these species could be tracked in the future if there is further evidence of their decline.
Scientific Name Common Name Global
Lasionycteris noctivagans Silver-haired Bat G5 S2S4 SC/N Y
Lasiurus borealis Eastern Red Bat G5 S3 SC/N Y
Lasiurus cinereus Hoary Bat G5 S3 SC/N Y
Lynx canadensis Canada Lynx G5 SNA LT SC/P
Mustela nivalis Least Weasel G5 SU SC/N
Myotis sodalis Indiana Bat G2 SNA SC/FL
Peromyscus maniculatus bairdii Prairie Deer Mouse G5T5 S3S4 SC/N
Peromyscus maniculatus gracilis Woodland Deer Mouse G5TNR S4 SC/N
Puma concolor Cougar G5 SNA SC/N

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Last revised: Thursday, October 08, 2015