Mammals of Pennsylvania Online Resource

Which mammals live in Pennsylvania, and where?

The following is a list of the 70 mammals known to live or have lived in Pennsylvania. The list provides common names and currently recognized scientific names. Each mammal is grouped with its closest relatives. Groupings are described in common terms as well as by family or order names. Please click on highlighted names to see information on that mammal.

Maps are shown for each species whose current distribution is known. Some mammals are found throughout the Commonwealth of Pennsylvania. Others have very limited distribution due to such factors as soil requirements, food preferences, or geographic barriers to dispersal. The larger map on each mammal page shows the counties from which specimens are represented in our collection.

Specimens of all these species are found in the research collection of the Section of Mammals at Carnegie Museum of Natural History. However, we do not have Pennsylvania specimens for some of the “long gone” species such as the wolf and the mountain lion.


Common name (Scientific name)
Pouched mammals (Marsupialia)  
Opossum  Didelphis virginiana 
Shrew family (Soricida) 
Short-tailed shrew  Blarina brevicauda 
Least shrew  Cryptotis parva 
Masked shrew  Sorex cinereus 
Long-tailed or Rock shrew  Sorex dispar 
Smoky shrew  Sorex fumeus 
Pygmy shrew  Sorex hoyi 
Water shrew  Sorex palustris 
Mole family (Talpidae) 
Eastern mole  Scalopus aquaticus 
Hairy-tailed mole  Parascalops breweri 
Star-nosed mole  Condylura cristata 
Evening bat family (Vespertilionidae) 
Big brown bat  Eptesicus fuscus 
Silver-haired bat  Lasionycteris noctivagans 
Red bat   Lasiurus borealis 
Hoary bat  Lasiurus cinereus 
Small-footed bat   Myotis leibii 
Northern long-eared bat   Myotis septentrionalis 
Little brown bat   Myotis lucifugus 
Indiana bat  Myotis sodalis 
Evening bat  Nycticeius humeralis 
Eastern pipistrelle  Pipistrellus subflavus 
Rabbits and hares (Lagomorpha) 
Snowshoe hare  Lepus americanus 
Eastern cottontail  Sylvilagus floridanus 
Appalachian cottontail   Sylvilagus obscurus 
Squirrel family (Sciuridae) 
Woodchuck or Groundhog  Marmota monax 
Gray squirrel  Sciurus carolinensis 
Fox squirrel  Sciurus niger 
Thirteen-lined ground squirrel  Spermophilus tridecemlineatus 
Eastern chipmunk  Tamias striatus 
Red squirrel  Tamiasciurus hudsonicus 
Northern flying squirrel  Glaucomys sabrinus 
Southern flying squirrel  Glaucomys volans 
Beaver family (Castoridae) 
Beaver   Castor canadensis 
New World rats and mice (Cricetinae) 
Woodrat or Pack rat  Neotoma floridana 
White-footed mouse  Peromyscus leucopus 
Deer mouse   Peromyscus maniculatus 
Red-backed vole  Clethrionomys gapperi 
Yellow-nosed vole  Microtus chrotorrhinus 
Meadow vole   Microtus pennsylvanicus 
Pine vole  Microtus pinetorum 
Muskrat  Ondatra zibethicus 
Bog lemming  Synaptomys cooperi 
Old World rats and mice (Murinae) 
House mouse   Mus musculus 
Norway rat  Rattus norvegicus 
Black rat   Rattus rattus 
Jumping mice family (Zapodidae) 
Woodland jumping mouse  Napaeozapus insignis 
Meadow jumping mouse  Zapus hudsonius 
Porcupine family (Erethizontidae) 
Porcupine   Erethizon dorsatum 
Dog family (Canidae)  
Coyote  Canis latrans 
Wolf  Canis lupus 
Gray fox  Urocyon cinereoargenteus 
Red fox  Vulpes vulpes 
Raccoon family (Procyonidae)  
Raccoon  Procyon lotor 
Bear family (Ursidae)  
Black bear  Ursus americanus 
Weasel family (Mustelidae)  
Pine marten  Martes americana 
Fisher  Martes pennanti 
Ermine or Short-tailed weasel  Mustela erminea 
Long-tailed weasel   Mustela frenata 
Least weasel   Mustela nivalis 
Mink   Mustela vison 
Badger  Taxidea taxus 
Striped skunk  Mephitis mephitis 
Spotted skunk  Spilogale putorius 
River otter  Lutra canadensis 
Cat family (Felidae) 
Mountain lion  Felis concolor 
Lynx  Lynx canadensis 
Bobcat  Lynx rufus 
Seal family (Phocidae) 
Hooded seal  Cystophora cristata 
Deer family (Cervidae) 
Elk   Cervus elaphus 
White-tailed deer   Odocoileus virginianus 


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