Mammals of Boston National Historical Park
The mammals most often spotted in Boston, ranked by recent research-grade observations.
1,896
recent observations
21
species listed
21
mammals
Naturalists have logged 1,896 research-grade observations across the 21 most-recorded species in Boston. The most frequently seen is the Eastern Gray Squirrel, with 1,398 recorded sightings.
Most-observed mammals in Boston
Eastern Gray Squirrel
Sciurus carolinensis
1,398 observations
Eastern Cottontail
Sylvilagus floridanus
383 observations
Brown Rat
Rattus norvegicus
55 observations
Harbor Seal
Phoca vitulina
12 observations
House Mouse
Mus musculus
11 observations
Eastern Chipmunk
Tamias striatus
5 observations
Common Raccoon
Procyon lotor
4 observations
Striped Skunk
Mephitis mephitis
4 observations
White-tailed Deer
Odocoileus virginianus
4 observations
Humpback Whale
Megaptera novaeangliae
3 observations
Domestic Cat
Felis catus
3 observations
Coyote
Canis latrans
2 observations
White-footed Mouse
Peromyscus leucopus
2 observations
Muskrat
Ondatra zibethicus
2 observations
American Red Squirrel
Tamiasciurus hudsonicus
2 observations
Big Brown Bat
Eptesicus fuscus
1 observation
Eastern Red Bat
Lasiurus borealis
1 observation
Harbour Porpoise
Phocoena phocoena
1 observation
Grey Seal
Halichoerus grypus
1 observation
Groundhog
Marmota monax
1 observation
Northern Short-tailed Shrew
Blarina brevicauda
1 observation
Mammals in nearby places
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