The list of mammals of Washington lists mammalian species that live in the U.S. state of Washington, including 9 introduced mammal species. The list does not include species found exclusively in captivity.
Opossums
Family: Didelphidae
Shrews and moles
Family: Soricidae
Family: Talpidae
Bats
Family: Vespertilionidae
- Pallid bat, Antrozous pallidus
- Townsend's big-eared bat, Corynorhinus townsendii
- Big brown bat, Eptesicus fuscus
- Spotted bat, Euderma maculatum
- Silver-haired bat, Lasionycteris noctivagans
- Hoary bat, Lasiurus cinereus
- California myotis, Myotis californicus
- Western small-footed myotis, Myotis ciliolabrum
- Long-eared myotis, Myotis evotis
- Keen's myotis, Myotis keenii
- Little brown myotis, Myotis lucifugus
- Fringed myotis, Myotis thysanodes
- Long-legged myotis, Myotis volans
- Yuma myotis, Myotis yumanensis
- Canyon bat, Parastrellus hesperus
Lagomorphs
Family: Ochotonidae
Family: Leporidae
Rodents
Family: Aplodontiidae
Family: Sciuridae
- Eastern gray squirrel, Sciurus carolinensis introduced
- Western gray squirrel, Sciurus griseus
- Fox squirrel, Sciurus niger
- Douglas squirrel, Tamiasciurus douglasii
- American red squirrel, Tamiasciurus hudsonicus
- Hoary marmot, Marmota caligata
- Yellow-bellied marmot, Marmota flaviventris
- Olympic marmot, Marmota olympus
- California ground squirrel, Otospermophilus beecheyi
- Golden-mantled ground squirrel, Callospermophilus lateralis
- Cascade golden-mantled ground squirrel, Callospermophilus saturatus
- Columbian ground squirrel, Urocitellus columbianus
- Piute ground squirrel, Urocitellus mollis
- Townsend's ground squirrel, Urocitellus townsendii
- Washington ground squirrel, Urocitellus washingtoni
- Yellow-pine chipmunk, Tamias amoenus
- Coulee chipmunk, Tamias grisescens
- Least chipmunk, Tamias minimus
- Red-tailed chipmunk, Tamias ruficaudus
- Townsend's chipmunk, Tamias townsendii
- Northern flying squirrel, Glaucomys sabrinus
Family: Castoridae
Family: Heteromyidae
Family: Geomyidae
Family: Zapodidae
Family: Cricetidae
- Sagebrush vole, Lemmiscus curtatus
- Gray-tailed vole, Microtus canicaudus
- Long-tailed vole, Microtus longicaudus
- Montane vole, Microtus montanus
- Creeping vole, Microtus oregoni
- Western meadow vole, Microtus drummondii
- Water vole, Microtus richardsoni
- Townsend's vole, Microtus townsendii
- Southern red-backed vole, Clethrionomys gapperi
- Muskrat, Ondatra zibethicus
- Western heather vole, Phenacomys intermedius
- Northern bog lemming, Synaptomys borealis
- Bushy-tailed woodrat, Neotoma cinerea
- Northern grasshopper mouse, Onychomys leucogaster
- Western deer mouse, Peromyscus sonoriensis
- Northwestern deer mouse, Peromyscus keeni
- Western harvest mouse, Reithrodontomys megalotis
Family: Muridae
Family: Erethizontidae
Family: Myocastoridae
- Nutria, Myocastor coypus introduced
Carnivorans
Family: Canidae
Family: Ursidae
Family: Otariidae
Family: Phocidae
Family: Procyonidae
Family: Mephitidae
Family: Felidae
Family: Mustelidae
Whales, dolphins and porpoises
Family: Balaenidae
Family: Balaenopteridae
Family: Delphinidae
Family: Monodontidae
Family: Phocoenidae
Family: Physeteridae
Family: Ziphiidae
Even-toed ungulates
Family: Antilocapridae
- Pronghorn, Antilocapra americana reintroduced
Family: Bovidae
Family: Cervidae
References