Aplodontiidae (Sewellels)

Sewellel

Aplodontia rufa

Castoridae (Beavers)

American Beaver

Castor canadensis

Sciuridae (Squirrels and Allies)

California Ground Squirrel

Spermophilus beecheyi

Yellow-cheeked Chipmunk

Tamias ochrogenys

Sonoma Chipmunk

Tamias sonomae

Eastern Fox Squirrel

Sciurus niger

Introduced

Western Gray Squirrel

Sciurus griseus

Douglas's Squirrel

Tamiasciurus douglasii

Geomyidae (Pocket Gophers)

Botta's Pocket Gopher

Thomomys bottae

Heteromyidae (Pocket Mice and Kangaroo Rats)

California Kangaroo Rat

Dipodomys californicus

Cricetidae (Hamsters, Voles, Lemmings, and Allies)

California Mouse

Peromyscus californicus

American Deer Mouse

Peromyscus maniculatus

Brush Mouse

Peromyscus boylii

Piņon Mouse

Peromyscus truei

Western Harvest Mouse

Reithrodontomys megalotis

Salt-Marsh Harvest Mouse

Reithrodontomys raviventris

Dusky-footed Woodrat

Neotoma fuscipes

Western Red-backed Vole

Myodes californicus

Sonoma Tree Vole

Arborimus pomo

California Vole

Microtus californicus

Common Muskrat

Ondatra zibethicus

Muridae (Rats and Mice)

House Mouse

Mus musculus

Introduced

Roof Rat

Rattus rattus

Introduced

Norway Rat

Rattus norvegicus

Introduced

Dipodidae (Jerboa and Jumping Mice)

Pacific Jumping Mouse

Zapus trinotatus

Erithozontidae (New World Porcupines)

North American Porcupine

Erethizon dorsatum

Leporidae (Rabbits and Hares)

Brush Rabbit

Sylvilagus bachmani

Desert Cottontail

Sylvilagus audubonii

Black-tailed Jackrabbit

Lepus californicus

Soricidae (Shrews)

Marsh Shrew

Sorex bendirii

Fog Shrew

Sorex sonomae

Vagrant Shrew

Sorex vagrans

Ornate Shrew

Sorex ornatus

Trowbridge's Shrew

Sorex trowbridgii

Talpidae (Moles)

American Shrew Mole

Neurotrichus gibbsii

Broad-footed Mole

Scapanus latimanus

Vespertilionidae (Vesper Bats)

California Myotis

Myotis californicus

Western Small-footed Myotis

Myotis ciliolabrum

Yuma Myotis

Myotis yumanensis

Little Brown Myotis

Myotis lucifugus

Long-legged Myotis

Myotis volans

Long-eared Myotis

Myotis evotis

Fringed Myotis

Myotis thysanodes

Silver-haired Back

Lasionycteris noctivagans

Western Pipistrelle

Pipistrellus hesperus

Big Brown Bat

Eptesicus fuscus

Western Red Bat

Lasiurus blossevillii

Hoary Bat

Lasiurus cinereus

Townsend's Big-eared Bat

Corynorhinus townsendii

Pallid Bat

Antrozous pallidus

Molossidae (Free-tailed Bats)

Brazilian Free-tailed Bat

Tadarida brasiliensis

Felidae (Cats)

Cougar

Puma concolor

Bobcat

Lynx rufus

Canidae (Wolves and Foxes)

Coyote

Canis latrans

Red Fox

Vulpes vulpes

Introduced

Common Gray Fox

Urocyon cinereoargenteus

Ursidae (Bears)

Black Bear

Ursus americanus

Procyonidae (Raccoons and Relatives)

Ringtail

Bassariscus astutus

Northern Raccoon

Procyon lotor

Mephitidae (Skunks)

Western Spotted Skunk

Spilogale gracilis

Striped Skunk

Mephitis mephitis

Mustelidae (Weasels, Otters, and Relatives)

Ermine

Mustela erminea

Long-tailed Weasel

Mustela frenata

American Mink

Mustela vison

American Badger

Taxidea taxus

Northern River Otter

Lontra canadensis

Sea Otter

Enhydra lutris

Otariidae (Fur Seals and Sea Lions)

Northern Fur Seal

Callorhinus ursinus

Guadalupe Fur Seal

Arctocephalus townsendi

Steller's Sea Lion

Eumetopias jubatus

California Sea Lion

Zalophus californianus

Phocidae (Hair Seals)

Harbor Seal

Phoca vitulina

Northern Elephant Seal

Mirounga angustirostris

Suidae (Old World Swine)

Wild Boar

Sus scrofa

Introduced

Cervidae (Deer)

Mule Deer

Odocoileus hemionus

Delphinidae (Oceanic Dolphins)

Rough-toothed Dolphin

Steno bredanensis

Common Bottlenose Dolphin

Tursiops truncatus

Striped Dolphin

Stenella coeruleoalba

Short-beaked Common Dolphin

Delphinus delphis

Long-beaked Common Dolphin

Delphinus capensis

Pacific White-sided Dolphin

Lagenorhynchus obliquidens

Northern Right Whale Dolphin

Lissodelphis borealis

Risso's Dolphin

Grampus griseus

False Killer Whale

Pseudorca crassidens

Killer Whale

Orcinus orca

Short-finned Pilot Whale

Globicephala macrorhynchus

Phocoenidae (Porpoises)

Harbor Porpoise

Phocoena phocoena

Dall's Porpoise

Phocoenoides dalli

Ziphiidae (Beaked Whales)

Cuvier's Beaked Whale

Ziphius cavirostris

Baird's Beaked Whale

Berardius bairdii

Hubbs's Beaked Whale

Mesoplodon carlhubbsi

Blainville's Beaked Whale

Mesoplodon densirostris

Stejneger's Beaked Whale

Mesoplodon stejnegeri

Physeteridae (Sperm Whales)

Sperm Whale

Physeter macrocephalus

Kogiidae (Pygmy and Dwarf Sperm Whales)

Pygmy Sperm Whale

Kogia breviceps

Dwarf Sperm Whale

Kogia simus

Balaenidae (Right Whales)

North Pacific Right Whale

Eubalaena japonica

Eschrichtiidae (Gray Whale)

Gray Whale

Eschrichtius robustus

Balaenopteridae (Rorqual Whales)

Blue Whale

Balaenoptera musculus

Fin Whale

Balaenoptera physalus

Sei Whale

Balaenoptera borealis

Minke Whale

Balaenoptera acutorostrata

Humpback Whale

Megaptera novaeangliae

Families: 32

Genera: 75

Species: 103