Mammals of Wisconsin
The mammals most often spotted in Wisconsin, ranked by recent research-grade observations.
53,640
recent observations
50
species listed
50
mammals
Naturalists have logged 53,640 research-grade observations across the 50 most-recorded species in Wisconsin. The most frequently seen is the White-tailed Deer, with 11,537 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
11,537 observations
Eastern Gray Squirrel
Sciurus carolinensis
7,863 observations
Eastern Cottontail
Sylvilagus floridanus
5,088 observations
Eastern Chipmunk
Tamias striatus
4,806 observations
American Red Squirrel
Tamiasciurus hudsonicus
3,129 observations
Common Raccoon
Procyon lotor
2,298 observations
Coyote
Canis latrans
2,032 observations
Muskrat
Ondatra zibethicus
2,002 observations
Red Fox
Vulpes vulpes
1,939 observations
Groundhog
Marmota monax
1,423 observations
American Beaver
Castor canadensis
1,348 observations
Thirteen-lined Ground Squirrel
Ictidomys tridecemlineatus
1,281 observations
Virginia Opossum
Didelphis virginiana
1,015 observations
American Black Bear
Ursus americanus
889 observations
North American Porcupine
Erethizon dorsatum
861 observations
American Mink
Neogale vison
618 observations
Northern Short-tailed Shrew
Blarina brevicauda
487 observations
North American River Otter
Lontra canadensis
414 observations
Eastern Fox Squirrel
Sciurus niger
371 observations
Domestic Cat
Felis catus
360 observations
Striped Skunk
Mephitis mephitis
348 observations
Gray Wolf
Canis lupus
315 observations
Bobcat
Lynx rufus
297 observations
Franklin's Ground Squirrel
Poliocitellus franklinii
259 observations
Western Meadow Vole
Microtus drummondii
239 observations
Big Brown Bat
Eptesicus fuscus
207 observations
Snowshoe Hare
Lepus americanus
198 observations
Fisher
Pekania pennanti
180 observations
Moose
Alces alces
148 observations
Gray Fox
Urocyon cinereoargenteus
125 observations
American Ermine
Mustela richardsonii
124 observations
Southern Flying Squirrel
Glaucomys volans
111 observations
Southern Red-backed Vole
Clethrionomys gapperi
104 observations · iNaturalist
American Badger
Taxidea taxus
103 observations
Eastern Mole
Scalopus aquaticus
100 observations
Northern Meadow Jumping Mouse
Zapus hudsonius
93 observations
White-footed Mouse
Peromyscus leucopus
90 observations
Star-nosed Mole
Condylura cristata
90 observations
Wapiti
Cervus canadensis
87 observations
Eastern Deermouse
Peromyscus maniculatus
82 observations
Least Chipmunk
Neotamias minimus
79 observations
Silver-haired Bat
Lasionycteris noctivagans
78 observations
Masked Shrew
Sorex cinereus
69 observations
Eastern Red Bat
Lasiurus borealis
62 observations
Plains Pocket Gopher
Geomys bursarius
58 observations
Little Brown Bat
Myotis lucifugus
57 observations
Northern Flying Squirrel
Glaucomys sabrinus
54 observations
Brown Rat
Rattus norvegicus
48 observations
American Marten
Martes americana
41 observations
House Mouse
Mus musculus
33 observations
Mammals in nearby places
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