Pouched Mammals, Didelphimorpha
Opossums, Didelphida
Opossums, Didelphis
Virginia Opossum, Didelphis virginianus
Insect-eating Mammals, Insectivora
Shrews, Soricidae
Shrew, Sorex
Masked shrew, Sorex cinereus
Montane shrew, Sorex monticolus
Masked shrew, Sorex cinereus
Wandering (vagrant) shrew, Sorex vagrans
Dusky and Yaquina shrews, Sorex obscurus and Sorex yaquinae
Pacific shrew, Sorex pacificus
Marsh shrew, Sorex bendirei
Northern water shrew, Sorex palustris
Trowbridge shrew, Sorex trowbridgei
Preble's shrew, Sorex preblei
Fog shrew, Sorex sonomae
Moles, Talpidae
American Shrew-mole, Neürotrichus
American Shrew-mole, Neürotrichus gibbsi
Western American Moles, Scapanus
Townsend mole, Scapanus townsendi
Coast mole, Scapanus orarius
Broad-handed mole, Scapanus latimanus
Hopping Mammals, Lagomorpha
Pikas or rock Rabbits, Ochotonidae
Pikas, Ochotona
Pika, Ochotona princeps
Hares and Rabbits, Leporidae
Hares, Lepus
Snowshoe hare, Lepus americanus
Black-tailed hare, Lepus californicus
White-tailed hare, Lepus townsendii
Rabbits, Sylvilagus
Brush rabbit, Sylvilagus bachmani
Eastern cottontail, Sylvilagus floridanus
Mountain cottontail, Sylvilagus nuttalli
Pygmy rabbit, Brachylaus idahoensis
Gnawing Mammals, Rodentia
Mountain Beaver, Aplodontidae
Mountain Beaver, Aplodontia
Mountain beaver, Aplodontia rufa
Chipmunks and Squirrels, Sciuridae
Chipmunks, Tamias
Townsend chipmunk, Tamias townsendi
Yellow-pine chipmunk, Tamias amoenus
Least chipmunk, Tamias minimus
Ground Squirrels, Spermophilus
Beechey ground squirrel, Spermophilus beldingi
Golden-mantled ground squirrel, Spermophilus lateralis
California ground squirrel, Spermophilus beecheyi
Columbian ground squirrel, Spermophilus columbianus
Wyoming ground squirrel, Spermophilus elegans
Townsends ground squirrel, Spermophilus townsendii
Merriam's ground squirrel, Spermophilus canus
Piute ground squirrel, Spermophilus mollis
Washington ground squirrel, Spermophilus washingtoni
White-tailed antelope squirrel, Amonspermophilus leucurus
Marmots, Marmota
Yellow-bellied marmot, Marmota flaviventris
Hoary marmot, Marmota caligata
Olympic marmot, Marmota olympus
Woodchuck, Marmota monax
Gray Squirrels and Fox Squirrels Sciurus
Western gray squirrel, Sciurus Griseus
Eastern gray squirrel, Sciurus carolinensis
Eastern fox squirrel, Sciurus niger
Red Squirrels and Chickarees Tamiasciurus
Douglas squirrel, Tamiasciurus douglasi
Red squirrel, Tamiasciurus hudsonicus
Flying Squirrels Galaucomys
Northern flying squirrel, Galaucomys sabrinus
Pocket Mice and Kangaroo Rats, Heteromyidae
Kangaroo Rats, Dipodomys
Heermann kangaroo rat,
Dipodomys heermanni
Pocket Gophers, Geomyidae
Western Pocket Gophers, Thomomys
Camas pocket gophers, Thomomys bulbivorus
Mazama pocket gophers, Thomomys mazama
Botta's pocket gophers, Thomomys bottae
Northern pocket gophers, Thomomys talpoides
Townsend's pocket gophers, Thomomys townsendii
True Beavers, Castoridae
True Beaver, Castor
North American beaver, Castor canadensis
Rats and Mice, Muridae
Indigenous Rats and Mice, Sigmodontinae
Harvest Mice, Reithrodontomys
Western harvest mouse, Reithrodontomys megalotis
Deer Mice and White-footed Mice, Peromyscus
Deer Mouse, Peromyscus maniculatus
Piñon Mouse, Peromyscus truei
Woodrats, Neotoma
Dusky-footed woodrat, Neotoma fuscipes
Bushy-tailed woodrat, Neotoma cinerea
Desert woodrat, Neotoma lepida
Voles, Arvicolinae
Red-backed Voles, Clethrionomys
California red-backed Vole, Clethrionomys californicus
Heather Voles, Phenacomys
Heather vole, Phenacomys intermedius
White-footed Vole and Tree Voles, Arborimus
White-footed vole, Arborimus albipes
Oregon red tree vole, Arborimus longicaudus
Meadow Voles, Microtus
Townsend vole, Microtus townsendi
Long-tailed vole, Microtus longicaudus
Creeping or Oregon vole, Microtus oregoni
Gray-tailed vole, Microtus canicaudus
Montane vole, Microtus montanus
California vole, Microtus californicus
Water vole, Microtus richardsoni
Muskrats, Ondatra
Muskrat, Ondatra zibethicus
Old World Rats and Mice, Murinae
Old World Rats, Rattus
Black Rats, Rattus rattus
Norway Rats, Rattus norvegicus
House Mice, Mus
House Mouse, Mus musculus
Birch Mice and Jumping Mice, Zapodidae
North American Jumping Mice, Zapus
Pacific jumping mouse, Zapus trinotatus
New World Porcupines, Erethizontidae
North American Porcupines, Erethizon
North American porcupine, Erethizon doratum
Coypus, Myocastoridae
Coypus, Myocastor
Coypu or Nutria Myocastor coypus
Flesh-eating mammals, Carnivora
Dogs and Foxes, Canidae
Dogs, Coyotes, Wolves, Canis
Coyote, Canis latrans
Red foxes, Vulpes
Red fox, Vulpes vulpes
Gray foxes, Urocyon
Gray fox, Urocyon cinereoargenteus
Bears, Ursidae
North American Black Bear, Ursus
North American black bear, Ursus Americanus
Ringtails, Raccoons, and Allies, Procyonidae
Ringtail, Bassariscus
Ringtail, Bassariscus Astutus
Raccoons, Procyon
Raccoon, Procyon lotor
Martens, Weasels, Skumks, Otters, and Allies, Mustelidae
Martens and Fishers, Martes
North American marten, Martes americana
Fisher or Pekan, Martes pennanti
Wolverine, Gulo
Wolverine, Gulo gulo
Weasels, Minks, and Allies, Mustela
Short-tailed weasel, Mustela erminea
Long-tailed weasel, Mustela frenata
Mink, Mustela vison
Spotted Skunks, Spilogale
Spotted skunk, Spilogale putorius
Striped and Hooded Skunks, Mephitis
Striped skunk, Mephitis mephitis
River Otters, Lutra
River Otter, Lutra canadensis
Cats, Lynxes, and Allies, Felidae
True Cats, Felis
Puma, cougar, or mountain lion, Felis concolor
Lynxes and Bobcats, Lynx
Bobcat, Lynx rufus
Lynx, Lynx canadensis
Even-toed hoofed Mammals, Artiocactyla
North American Elk, Deer, and Allies, Cervidae
North American Elk, and Allies, Cervus
North American Elk, Cervus elephus
Mule Deer and White-tailed Deer, Odocoileus Cervus
Mule deer, Odocoileus hemionus
White-tailed deer, Odocoileus virginianus
Pronghorn, Antilocapridae
Pronghorn, Antilocaprial americana
Sheep and goats, Bovidae
Bison, Bos bison
Mountain goat, Oreamnos americanus
Bighorn sheep, Ovis canadensis
Compiled from Maser (1998), Cassaway and Verts (1998), Eder (2002), and Ingles (1965).