Artiodactyla
- Cervidae
- Cervus canadensis roosevelti Merriam, 1897—Roosevelt’s wapiti
- Odocoileus hemionus columbianus (Richardson, 1829)—Columbian black-tailed deer
Carnivora
- Canidae
- Canis latrans Say, 1823—coyote
- Mephitidae
- Mephitis mephitis (Schreber, 1776)—striped skunk
- Mustelidae
- Mustela richardsonii Bonaparte, 1838—American ermine
Eulipotyphla
- Soricidae
- Sorex vagrans Baird, 1857—vagrant shrew
- Talpidae
- Neurotrichus gibbsii (Baird, 1858)—American shrew mole
Rodentia
- Cricetidae
- Microtus oregoni (Bachman, 1839)—Oregon vole
- Microtus townsendii (Bachman, 1839)—Townsend’s vole
- Peromyscus sonoriensis (J. A. Wagner, 1845)—western deer mouse
- Muridae
- Mus musculus Linnaeus, 1758—house mouse
- Rattus norvegicus (Berkenhout, 1769)—brown rat
- Sciuridae
- Otospermophilus beecheyi (Richardson, 1829)—California ground squirrel
- Sciurus carolinensis Gmelin, 1788—eastern gray squirrel