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White-tailed Deer
Odocoileus virginianus
20,155 observations
Eastern Gray Squirrel
Sciurus carolinensis
13,723 observations
Eastern Cottontail
Sylvilagus floridanus
8,214 observations
Eastern Chipmunk
Tamias striatus
5,883 observations
Groundhog
Marmota monax
4,604 observations
Common Raccoon
Procyon lotor
3,674 observations
Red Fox
Vulpes vulpes
3,494 observations
American Beaver
Castor canadensis
1,777 observations
Domestic Cat
Felis catus
1,749 observations
American Red Squirrel
Tamiasciurus hudsonicus
1,548 observations
Virginia Opossum
Didelphis virginiana
1,337 observations
American Black Bear
Ursus americanus
1,302 observations
Northern Short-tailed Shrew
Blarina brevicauda
1,208 observations
Eastern Fox Squirrel
Sciurus niger
1,083 observations
North American Porcupine
Erethizon dorsatum
1,081 observations
Striped Skunk
Mephitis mephitis
753 observations
Muskrat
Ondatra zibethicus
716 observations
Coyote
Canis latrans
614 observations
American Mink
Neogale vison
606 observations
Wapiti
Cervus canadensis
557 observations
Big Brown Bat
Eptesicus fuscus
473 observations
Eastern Meadow Vole
Microtus pennsylvanicus
325 observations
White-footed Mouse
Peromyscus leucopus
325 observations
Brown Rat
Rattus norvegicus
285 observations
Gray Fox
Urocyon cinereoargenteus
266 observations
Southern Flying Squirrel
Glaucomys volans
237 observations
Fisher
Pekania pennanti
199 observations
Bobcat
Lynx rufus
194 observations
House Mouse
Mus musculus
183 observations
Eastern Red Bat
Lasiurus borealis
179 observations
North American River Otter
Lontra canadensis
130 observations
Hairy-tailed Mole
Parascalops breweri
115 observations
Star-nosed Mole
Condylura cristata
103 observations
Eastern Deermouse
Peromyscus maniculatus
70 observations
Silver-haired Bat
Lasionycteris noctivagans
52 observations
Masked Shrew
Sorex cinereus
52 observations
Northern Meadow Jumping Mouse
Zapus hudsonius
48 observations
Long-tailed Weasel
Neogale frenata
40 observations
Southern Red-backed Vole
Clethrionomys gapperi
38 observations
Tri-coloured Bat
Perimyotis subflavus
36 observations
Woodland Vole
Microtus pinetorum
32 observations
Eastern Mole
Scalopus aquaticus
28 observations
Eastern Woodland Jumping Mouse
Napaeozapus insignis
27 observations
American Ermine
Mustela richardsonii
26 observations
Domestic Dog
Canis familiaris
24 observations
Little Brown Bat
Myotis lucifugus
23 observations
European Rabbit
Oryctolagus cuniculus
19 observations
Northern Hoary Bat
Lasiurus cinereus
15 observations
Allegheny Woodrat
Neotoma magister
14 observations
Northern Flying Squirrel
Glaucomys sabrinus
13 observations
Frequently Asked Questions
- The 10 most common mammals in Pennsylvania are:
- White-tailed Deer (Odocoileus virginianus)
- Eastern Gray Squirrel (Sciurus carolinensis)
- Eastern Cottontail (Sylvilagus floridanus)
- Eastern Chipmunk (Tamias striatus)
- Groundhog (Marmota monax)
- Common Raccoon (Procyon lotor)
- Red Fox (Vulpes vulpes)
- American Beaver (Castor canadensis)
- Domestic Cat (Felis catus)
- American Red Squirrel (Tamiasciurus hudsonicus)
- The most observed mammal in Pennsylvania is White-tailed Deer (Odocoileus virginianus), with 20,155 recorded observations.