Mammals of Wisconsin
The mammals most often spotted in Wisconsin, ranked by recent research-grade observations.
52,562
recent observations
50
species listed
50
mammals
Naturalists have logged 52,562 research-grade observations across the 50 most-recorded species in Wisconsin. The most frequently seen is the White-tailed Deer, with 11,320 recorded sightings.
Rarer finds confirmed in Wisconsin include Gray Wolf, Bobcat and Fisher - uncommon enough that a sighting is worth logging.
Most-observed mammals in Wisconsin
White-tailed Deer
Odocoileus virginianus
11,320 observations
Eastern Gray Squirrel
Sciurus carolinensis
7,740 observations
Eastern Cottontail
Sylvilagus floridanus
4,974 observations
Eastern Chipmunk
Tamias striatus
4,647 observations
American Red Squirrel
Tamiasciurus hudsonicus
3,062 observations
Common Raccoon
Procyon lotor
2,246 observations
Coyote
Canis latrans
1,994 observations
Muskrat
Ondatra zibethicus
1,975 observations
Red Fox
Vulpes vulpes
1,924 observations
Groundhog
Marmota monax
1,391 observations
American Beaver
Castor canadensis
1,337 observations
Thirteen-lined Ground Squirrel
Ictidomys tridecemlineatus
1,252 observations
Virginia Opossum
Didelphis virginiana
994 observations
American Black Bear
Ursus americanus
869 observations
North American Porcupine
Erethizon dorsatum
852 observations
American Mink
Neogale vison
611 observations
Northern Short-tailed Shrew
Blarina brevicauda
479 observations
North American River Otter
Lontra canadensis
411 observations
Eastern Fox Squirrel
Sciurus niger
356 observations
Domestic Cat
Felis catus
348 observations
Striped Skunk
Mephitis mephitis
335 observations
Gray Wolf
Canis lupus
311 observations
Bobcat
Lynx rufus
284 observations
Franklin's Ground Squirrel
Poliocitellus franklinii
246 observations
Western Meadow Vole
Microtus drummondii
236 observations
Big Brown Bat
Eptesicus fuscus
203 observations
Snowshoe Hare
Lepus americanus
197 observations
Fisher
Pekania pennanti
176 observations
Moose
Alces alces
143 observations
Gray Fox
Urocyon cinereoargenteus
122 observations
American Ermine
Mustela richardsonii
122 observations
Southern Flying Squirrel
Glaucomys volans
111 observations
Southern Red-backed Vole
Clethrionomys gapperi
103 observations · iNaturalist
American Badger
Taxidea taxus
101 observations
Eastern Mole
Scalopus aquaticus
97 observations
Northern Meadow Jumping Mouse
Zapus hudsonius
90 observations
White-footed Mouse
Peromyscus leucopus
90 observations
Star-nosed Mole
Condylura cristata
88 observations
Wapiti
Cervus canadensis
87 observations
Eastern Deermouse
Peromyscus maniculatus
82 observations
Least Chipmunk
Neotamias minimus
76 observations
Masked Shrew
Sorex cinereus
68 observations
Silver-haired Bat
Lasionycteris noctivagans
65 observations
Eastern Red Bat
Lasiurus borealis
60 observations
Little Brown Bat
Myotis lucifugus
57 observations
Plains Pocket Gopher
Geomys bursarius
57 observations
Northern Flying Squirrel
Glaucomys sabrinus
54 observations
Brown Rat
Rattus norvegicus
47 observations
American Marten
Martes americana
39 observations
House Mouse
Mus musculus
33 observations
Mammals in nearby places
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