Mammals of Gateway Arch National Park
The mammals most often spotted in Gateway Arch, ranked by recent research-grade observations.
Most-observed mammals in Gateway Arch
Eastern Gray Squirrel
Sciurus carolinensis
111 observations
Eastern Cottontail
Sylvilagus floridanus
34 observations
Eastern Red Bat
Lasiurus borealis
23 observations
Groundhog
Marmota monax
17 observations
Virginia Opossum
Didelphis virginiana
12 observations
White-tailed Deer
Odocoileus virginianus
5 observations
Big Brown Bat
Eptesicus fuscus
4 observations
Evening Bat
Nycticeius humeralis
4 observations
Silver-haired Bat
Lasionycteris noctivagans
3 observations
Common Raccoon
Procyon lotor
3 observations
Brown Rat
Rattus norvegicus
3 observations
Eastern Fox Squirrel
Sciurus niger
1 observation
Northern Short-tailed Shrew
Blarina brevicauda
1 observation
Domestic Cat
Felis catus
1 observation
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