Mammals of Wisconsin
The mammals most often spotted in Wisconsin, ranked by recent research-grade observations.
51,791
recent observations
50
species listed
50
mammals
Naturalists have logged 51,791 research-grade observations across the 50 most-recorded species in Wisconsin. The most frequently seen is the White-tailed Deer, with 11,152 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
11,152 observations
Eastern Gray Squirrel
Sciurus carolinensis
7,683 observations
Eastern Cottontail
Sylvilagus floridanus
4,869 observations
Eastern Chipmunk
Tamias striatus
4,569 observations
American Red Squirrel
Tamiasciurus hudsonicus
3,033 observations
Common Raccoon
Procyon lotor
2,217 observations
Coyote
Canis latrans
1,971 observations
Muskrat
Ondatra zibethicus
1,952 observations
Red Fox
Vulpes vulpes
1,908 observations
Groundhog
Marmota monax
1,357 observations
American Beaver
Castor canadensis
1,312 observations
Thirteen-lined Ground Squirrel
Ictidomys tridecemlineatus
1,221 observations
Virginia Opossum
Didelphis virginiana
982 observations
American Black Bear
Ursus americanus
843 observations
North American Porcupine
Erethizon dorsatum
840 observations
American Mink
Neogale vison
592 observations
Northern Short-tailed Shrew
Blarina brevicauda
470 observations
North American River Otter
Lontra canadensis
403 observations
Eastern Fox Squirrel
Sciurus niger
356 observations
Domestic Cat
Felis catus
341 observations
Striped Skunk
Mephitis mephitis
327 observations
Gray Wolf
Canis lupus
303 observations
Bobcat
Lynx rufus
278 observations
Franklin's Ground Squirrel
Poliocitellus franklinii
242 observations · iNaturalist
Western Meadow Vole
Microtus drummondii
233 observations · iNaturalist
Big Brown Bat
Eptesicus fuscus
201 observations
Snowshoe Hare
Lepus americanus
191 observations
Fisher
Pekania pennanti
174 observations
Moose
Alces alces
141 observations
Gray Fox
Urocyon cinereoargenteus
122 observations
American Ermine
Mustela richardsonii
122 observations · iNaturalist
Southern Flying Squirrel
Glaucomys volans
111 observations
Southern Red-backed Vole
Clethrionomys gapperi
103 observations · iNaturalist
American Badger
Taxidea taxus
100 observations
White-footed Mouse
Peromyscus leucopus
90 observations
Eastern Mole
Scalopus aquaticus
90 observations
Northern Meadow Jumping Mouse
Zapus hudsonius
89 observations
Wapiti
Cervus canadensis
87 observations
Eastern Deermouse
Peromyscus maniculatus
82 observations
Star-nosed Mole
Condylura cristata
82 observations
Least Chipmunk
Neotamias minimus
76 observations
Masked Shrew
Sorex cinereus
69 observations
Silver-haired Bat
Lasionycteris noctivagans
65 observations
Eastern Red Bat
Lasiurus borealis
58 observations
Plains Pocket Gopher
Geomys bursarius
57 observations
Little Brown Bat
Myotis lucifugus
56 observations
Northern Flying Squirrel
Glaucomys sabrinus
53 observations
Brown Rat
Rattus norvegicus
47 observations
American Marten
Martes americana
39 observations
House Mouse
Mus musculus
32 observations
Mammals in nearby places
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