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This list of mammals in Pennsylvania consists of 67 species currently believed to occur wild in the state. This excludes feral domesticated species.
Contents
Several species recently lived wild in Pennsylvania, but are now probably extirpated. They are the marsh rice rat (Oryzomys palustris), gray wolf (Canis lupus), marten (Martes americana), wolverine (Gulo gulo), badger (Taxidea taxus), mountain lion (Felis concolor), lynx (Lynx lynx), moose (Alces alces) and bison (Bison bison).
Opossums
Order: Didelphimorphia Family: Didelphidae
One species of opossum occurs in Pennsylvania.
Shrews and moles
Order: Soricomorpha Family: Soricidae
Seven species of shrews live in Pennsylvania.
Order: Soricomorpha Family: Talpidae
Three species of moles occur in Pennsylvania.
Bats
Order: Chiroptera Family: Vespertilionidae
Twelve species of evening bats occur in Pennsylvania.
Rabbits and hares
Order: Lagomorpha Family: Leporidae
Three species of rabbits and hares occur in Pennsylvania.
Rodents
Order: Rodentia Family: Castoridae
One species of beaver occurs in Pennsylvania.
Order: Rodentia Family: Myocastoridae
One species of porcupine occurs in Pennsylvania.
Order: Rodentia Family: Dipodidae
Two species of jumping mice occur in Pennsylvania.
Order: Rodentia Family: Cricetidae
Nine species of voles and New World rats and mice occur in Pennsylvania.
Subfamily Arvicolinae (lemmings, voles, and muskrats)
Subfamily Neotominae (North American rats and mice)
Order: Rodentia Family: Muridae
Three species of Old World rats and mice occur in Pennsylvania.
Order: Rodentia Family: Sciuridae
Eight species of squirrels, chipmunks, and marmots occur in Pennsylvania.
Subfamily Sciurinae (tree squirrels and flying squirrels)
Subfamily Xerinae (chipmunks and ground squirrels)
Carnivorans
Order: Carnivora Family: Felidae
One species of cat occurs in Pennsylvania.
Order: Carnivora Family: Canidae
Three species of canids occurred in Pennsylvania.
Order: Carnivora Family: Ursidae
One species of bear occurs in Pennsylvania.
Order: Carnivora Family: Mephitidae
Two species of skunks occur in Pennsylvania.
Order: Carnivora Family: Mustelidae
Six species of weasels occur in Pennsylvania.
Order: Carnivora Family: Procyonidae
One species of raccoons occurs in Pennsylvania.
Hoofed mammals
Order: Artiodactyla Family: Cervidae
Two species of deer and elk occur in Pennsylvania.