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Mammals of Milwaukee, WI

The mammals most often spotted near Milwaukee, ranked by recent research-grade observations.

7,956
recent observations
42
species listed
42
mammals

Naturalists have logged 7,956 research-grade observations across the 42 most-recorded species near Milwaukee. The most frequently seen is the White-tailed Deer, with 1,853 recorded sightings.

Rarer finds confirmed near Milwaukee include Bobcat - uncommon enough that a sighting is worth logging.

Bobcat

Most-observed mammals near Milwaukee

White-tailed Deer
Odocoileus virginianus
1,853 observations
Eastern Gray Squirrel
Sciurus carolinensis
1,678 observations
Eastern Cottontail
Sylvilagus floridanus
930 observations
Coyote
Canis latrans
689 observations
Eastern Chipmunk
Tamias striatus
669 observations
Common Raccoon
Procyon lotor
450 observations
American Red Squirrel
Tamiasciurus hudsonicus
384 observations
Virginia Opossum
Didelphis virginiana
231 observations
Muskrat
Ondatra zibethicus
199 observations
American Beaver
Castor canadensis
169 observations
Red Fox
Vulpes vulpes
128 observations
Groundhog
Marmota monax
118 observations
American Mink
Neogale vison
68 observations
Thirteen-lined Ground Squirrel
Ictidomys tridecemlineatus
62 observations
Northern Short-tailed Shrew
Blarina brevicauda
61 observations
Silver-haired Bat
Lasionycteris noctivagans
45 observations
Domestic Cat
Felis catus
45 observations
Eastern Red Bat
Lasiurus borealis
27 observations
Western Meadow Vole
Microtus drummondii
27 observations
Brown Rat
Rattus norvegicus
23 observations
Striped Skunk
Mephitis mephitis
13 observations
Big Brown Bat
Eptesicus fuscus
12 observations
Masked Shrew
Sorex cinereus
11 observations
Eastern Fox Squirrel
Sciurus niger
9 observations
Southern Flying Squirrel
Glaucomys volans
8 observations
North American River Otter
Lontra canadensis
7 observations
Northern Meadow Jumping Mouse
Zapus hudsonius
6 observations
American Ermine
Mustela richardsonii
6 observations
American Badger
Taxidea taxus
3 observations
House Mouse
Mus musculus
3 observations
Least Weasel
Mustela nivalis
3 observations
Long-tailed Weasel
Neogale frenata
3 observations · iNaturalist
Southern Red-backed Vole
Clethrionomys gapperi
3 observations · iNaturalist
Northern Hoary Bat
Lasiurus cinereus
2 observations
American Black Bear
Ursus americanus
2 observations
White-footed Mouse
Peromyscus leucopus
2 observations
Star-nosed Mole
Condylura cristata
2 observations
Bobcat
Lynx rufus
1 observation
Gray Fox
Urocyon cinereoargenteus
1 observation
European Fallow Deer
Dama dama
1 observation
Eastern Deer Mouse
Peromyscus maniculatus
1 observation
Eastern Mole
Scalopus aquaticus
1 observation

Built from recent research-grade iNaturalist observations. Identifications are community-sourced and may occasionally be wrong, and the ranking reflects where people record and photograph wildlife, so a species seen often here is not necessarily rare elsewhere. Some plants and animals are only out in certain seasons. Treat this as a lively snapshot of what people are finding, not a formal checklist.

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