List of mammals of Pennsylvania
This list of mammals in Pennsylvania consists of 66 species currently believed to occur wild in the state. This excludes feral domesticated species such as feral cats and dogs.
Several species recently lived wild in Pennsylvania, but are now extirpated. They are the marsh rice rat, eastern wolf, American marten, wolverine, cougar, Canada lynx, moose, and bison.
Opossums
Order: DidelphimorphiaFamily: Didelphidae
One species of opossum occurs in Pennsylvania.
Shrews and moles
Order: EulipotyphlaFamily: Soricidae
Seven species of shrews live in Pennsylvania.
Family: Talpidae
Three species of moles occur in Pennsylvania.
Bats
Order: ChiropteraFamily: Vespertilionidae
Eleven species of evening bats occur in Pennsylvania.
Rabbits and hares
Order: LagomorphaFamily: Leporidae
Three species of rabbits and hares occur in Pennsylvania.
Rodents
Order: RodentiaFamily: Castoridae
One species of beaver occurs in Pennsylvania.
Family: Myocastoridae
One species of porcupine occurs in Pennsylvania.
Family: Zapodidae
Two species of jumping mice occur in Pennsylvania.
Family: Cricetidae
Nine species of voles and New World rats and mice occur in Pennsylvania.
Subfamily Arvicolinae
Subfamily Neotominae
Family: Muridae
Three species of Old World rats and mice occur in Pennsylvania.
Family: Sciuridae
Eight species of squirrels, chipmunks, and marmots occur in Pennsylvania.
Subfamily Sciurinae
'''Subfamily Xerinae'''
Carnivorans
Order: CarnivoraFamily: Felidae
One species of cat occurs in Pennsylvania.
Family: Canidae
Three species of canids occur in Pennsylvania.
Family: Ursidae
One species of bear occurs in Pennsylvania.
Family: Mephitidae
Two species of skunks occur in Pennsylvania.
Family: Mustelidae
Seven species of mustelids occur in Pennsylvania.
Family: Procyonidae
One species of raccoon occurs in Pennsylvania.
Hoofed mammals
Order: ArtiodactylaFamily: Cervidae
Two species of deer occur in Pennsylvania.