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White-tailed Deer
Odocoileus virginianus
19,439 observations
Eastern Gray Squirrel
Sciurus carolinensis
13,403 observations
Eastern Cottontail
Sylvilagus floridanus
7,711 observations
Eastern Chipmunk
Tamias striatus
5,664 observations
Groundhog
Marmota monax
4,351 observations
Common Raccoon
Procyon lotor
3,548 observations
Red Fox
Vulpes vulpes
3,397 observations
American Beaver
Castor canadensis
1,745 observations
Domestic Cat
Felis catus
1,703 observations
American Red Squirrel
Tamiasciurus hudsonicus
1,501 observations
Virginia Opossum
Didelphis virginiana
1,313 observations
American Black Bear
Ursus americanus
1,245 observations
Northern Short-tailed Shrew
Blarina brevicauda
1,183 observations
North American Porcupine
Erethizon dorsatum
1,050 observations
Eastern Fox Squirrel
Sciurus niger
1,027 observations
Striped Skunk
Mephitis mephitis
712 observations
Muskrat
Ondatra zibethicus
703 observations
Coyote
Canis latrans
591 observations
American Mink
Neogale vison
584 observations
Elk
Cervus canadensis
544 observations
Big Brown Bat
Eptesicus fuscus
444 observations
Eastern Meadow Vole
Microtus pennsylvanicus
307 observations
White-footed Mouse
Peromyscus leucopus
306 observations
Brown Rat
Rattus norvegicus
281 observations
Gray Fox
Urocyon cinereoargenteus
254 observations
Southern Flying Squirrel
Glaucomys volans
229 observations
Fisher
Pekania pennanti
193 observations
Bobcat
Lynx rufus
191 observations
House Mouse
Mus musculus
177 observations
Eastern Red Bat
Lasiurus borealis
169 observations
North American River Otter
Lontra canadensis
124 observations
Hairy-tailed Mole
Parascalops breweri
110 observations
Star-nosed Mole
Condylura cristata
100 observations
Eastern Deermouse
Peromyscus maniculatus
69 observations
Silver-haired Bat
Lasionycteris noctivagans
52 observations
Masked Shrew
Sorex cinereus
52 observations
Northern Meadow Jumping Mouse
Zapus hudsonius
46 observations
Long-tailed Weasel
Neogale frenata
38 observations
Southern Red-backed Vole
Clethrionomys gapperi
37 observations
Tri-coloured Bat
Perimyotis subflavus
36 observations
Eastern Woodland Jumping Mouse
Napaeozapus insignis
27 observations
Eastern Mole
Scalopus aquaticus
27 observations
American Ermine
Mustela richardsonii
25 observations
Woodland Vole
Microtus pinetorum
24 observations
Domestic Dog
Canis familiaris
24 observations
Little Brown Bat
Myotis lucifugus
21 observations
European Rabbit
Oryctolagus cuniculus
18 observations
Northern Hoary Bat
Lasiurus cinereus
14 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 19,439 recorded observations.