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Order

The order Rodentia is represented in California by the following taxa:

Family Aplodontidae (mountain beaver)
    Genus Aplodontia
            Aplodontia rufa californica (Sierra Nevada Mountain Beaver)
            Aplodontia rufa nigra (Point Arena Mountain Beaver)
            Aplodontia rufa phaea (Point Reyes Mountain Beaver)
Family Castoridae (beavers) 
        Genus Castor
           *Castor canadensis (American Beaver)
Family Erethizontidae (porcupines)
        Genus Erethizon
            Erethizon dorsatum (Common Porcupine)
Family Geomyidae (pocket gophers)
        Genus Thomomys
            Thomomys bottae (Botta's Pocket Gopher)
            Thomomys mazama (Western Pocket Gopher)
            Thomomys monticola (Mountain Pocket Gopher)
            Thomomys talpoides (Northern Pocket Gopher)
            Thomomys townsendii (Townsend's Pocket Gopher)
Family Heteromyidae (kangaroo rats, pocket mice, etc.)
        Genus Chaetodipus
            Chaetodipus baileyi (Bailey's Pocket Mouse)
            Chaetodipus californicus (California Pocket Mouse)
                ssp. femoralis (Dulzura Pocket Mouse)
            Chaetodipus fallax fallax (Northwestern San Diego Pocket Mouse)
                ssp. pallidus (Pallid San Diego Pocket Mouse)
            Chaetodipus formosus (Long-tailed Pocket Mouse)
            Chaetodipus penicillatus (Desert Pocket Mouse)
            Chaetodipus spinatus (Spiny Pocket Mouse)
        Genus Dipodomys
            Dipodomys agilis (Pacific or Agile Kangaroo Rat)
            Dipodomys californicus (California Kangaroo Rat)
                ssp. eximus (Marysville Kangaroo Rat)
            Dipodomys deserti (Desert Kangaroo Rat)
            Dipodomys heermanni (Heermann's Kangaroo Rat)
                ssp. morroensis (Morro Bay Kangaroo Rat)
            Dipodomys ingens (Giant Kangaroo Rat)
            Dipodomys merriami (Merriam's Kangaroo Rat)
                ssp. parvus (San Bernardino Kangaroo Rat)
            Dipodomys microps (Chisel-toothed Kangaroo Rat)
            Dipodomys nitratoides (San Joaquin or Fresno Kangaroo Rat)
                ssp. brevinasus (Short-nosed Kangaroo Rat)
                ssp. exilis (Fresno Kangaroo Rat)
                ssp. nitroides (Tipton Kangaroo Rat)
            Dipodomys panamintinus (Panamint Kangaroo Rat)
            Dipodomys simulans (San Diego Kangaroo Rat)
            Dipodomys stephensi (Stephens' Kangaroo Rat)
            Dipodomys venustus (Narrow-faced Kangaroo Rat)
        Genus Microdipodops 
            Microdipodops megacephalus (Dark Kangaroo Mouse)
            Microdipodops pallidus (Pale Kangaroo Mouse)
        Genus Perognathus
            Perognathus alticolus (White-eared Pocket Mouse)
                ssp. inexpectans (Tehachapi Pocket Mouse)
            Perognathus inornatus (San Joaquin Pocket Mouse)
                ssp. psammophilus (Salinas Pocket Mouse)
            Perognathus longimembris (Little Pocket Mouse)
                ssp. bangsi (Palm Springs Pocket Mouse)
                ssp. brevinasus (Los Angeles Pocket Mouse)
                ssp. internationalis (Jacumba Pocket Mouse)
                ssp. pacificus (Pacific Pocket Mouse)
            Perognathus parvus (Great Basin Pocket Mouse)
Family Muridae (rats, mice, voles, etc.)
    Subfamily Sigmodontinae (cotton rats, wood rats, harvest mice, deer mice, etc.)
        Genus Neotoma
            Neotoma albigula (White-throated Woodrat)
            Neotoma cinerea (Bushy-tailed Woodrat)
            Neotoma fuscipes (Dusky-footed Woodrat)
            Neotoma fuscipes annectens (San Francisco Woodrat)
            Neotoma fuscipes luciana (Monterey Woodrat)
            Neotoma fuscipes riparia (Riparian Woodrat)
            Neotoma lepida (Desert Woodrat or Packrat)
            Neotoma lepida intermedia (San Diego Woodrat)
        Genus Onychomys
            Onychomys leucogaster (Northern Grasshopper Mouse)
            Onychomys torridus (Southern Grasshopper Mouse)
            Onychomys torridus ramona 
            Onychomys torridus tularensis (Tulare Grasshopper Mouse) 
        Genus Peromyscus 
            Peromyscus boylii (Brush Mouse)
            Peromyscus californicus (California Mouse)
            Peromyscus crinitus (Canyon Mouse)
            Peromyscus eremicus (Cactus Mouse)
            Peromyscus maniculatus (Deer Mouse)
            Peromyscus maniculatus anacapae (Anacapa Island Deer Mouse)
            Peromyscus maniculatus clementis (San Clemente Island Deer Mouse)
            Peromyscus truei (Pinyon Mouse)
        Genus Reithrodontomys (harvest mice)
            Reithrodontomys megalotis (Western Harvest Mouse)
            Reithrodontomys megalotis limicola (Southern Marsh Harvest Mouse)
            Reithrodontomys megalotis santacruzae   (Santa Cruz Harvest Mouse)
            Reithrodontomys raviventris (Salt-marsh Harvest Mouse)
        Genus Sigmodon
            Sigmodon arizonae (Arizona Cotton Rat)
            Sigmodon arizonae plenus (Colorado River Cotton Rat)
            Sigmodon hispidus (Hispid Cotton Rat)
            Sigmodon hispidus eremicus (Yuma Cotton Rat)
    Subfamily Murinae
        Genus Rattus (Old World rats and mice)
           *Mus musculus (House Mouse)
           *Rattus norvegicus (Norway Rat)
           *Rattus rattus (Black Rat)
    Subfamily Microtinae
        Genus Arborimus
            Arborimus alpipes (White-footed vole)
            Arborimus pomo (Red Tree Vole)
        Genus Clethrionomys
            Clethrionomys californicus (Western Red-backed Vole)
        Genus Lemmiscus 
            Lemmiscus curtatus (Sagebrush Vole)
        Genus Microtus
            Microtus californicus (California Vole)
            Microtus californicus mohavensis (Mojave River Vole)
            Microtus californicus sanpabloensis (San Pablo Vole)
            Microtus californicus scirpensis (Amargosa Vole)
            Microtus californicus stephensi (Stephens' Vole)
            Microtus californicus vallicola (Owens Valley Vole)
            Microtus longicaudus (Long-tailed Vole)
            Microtus oregoni (Creeping Vole)
            Microtus townsendi (Townsend's Vole)
        Genus Ondatra
           *Ondatra zibethica (Muskrat)
        Genus Phenacomys
            Phenacomys intermedius (Heather Vole)
Family Sciuridae (squirrels and chipmunks)
        Genus Ammospermophilus
            Ammospermophilus leucurus (White-tailed Antelope Squirrel)
            Ammospermophilus nelsoni (San Joaquin or Nelson's Antelope Squirrel)
        Genus Glaucomys
            Glaucomys sabrinus (Northern Flying Squirrel)
                ssp. californicus (San Bernardino Flying Squirrel)
        Genus Marmota
            Marmota flaviventris (Yellow-bellied Marmot)
        Genus Spermophilus 
            Spermophilus beecheyi (California Ground Squirrel)
            Spermophilus beldingi (Belding's Ground Squirrel)
            Spermophilus lateralis (Golden-mantled Ground Squirrel)
            Spermophilus mohavensis (Mojave Ground Squirrel)
            Spermophilus terticaudus (Round-tailed Ground Squirrel)
                ssp. chlorus (Palm Springs Ground Squirrel)
            Spermophilus townsendii (Townsend's Ground Squirrel)
            Spermophilus variegatus (Rock Squirrel)
        Genus Sciurus
           *Sciurus carolinensis (Eastern Gray Squirrel)
             Sciurus griseus (Western Gray Squirrel)
           *Sciurus niger (Eastern Fox Squirrel)    
        Genus Tamias
            Tamias alpinus (Alpine Chimpmunk)
            Tamias amoenus (Yellow-pine Chipmunk)
            Tamias quadrimaculatus (Long-eared Chipmunk)
            Tamias merriami (Merriam's Chimpmunk)
            Tamias minimus (Least Chipmunk)
            Tamias obscurus (California or Dusky Chipmunk)
            Tamias ochrogenys (Yellow-cheeked Chipmunk)
            Tamias panamintinus (Panamint Chipmunk)
            Tamias senex (Allen's Chipmunk)
            Tamias siskiyou (Siskiyou Chipmunk)
            Tamias sonomae (Sonoma Chipmunk)
            Tamias speciosus (Lodgepole Chipmunk)
            Tamias umbrinus (Uinta Chipmunk)
        Genus Tamiasciurus
            Tamiasciurus douglasi (Douglas' Squirrel)
Family Zapodidae (jumping mice)
        Genus Zapus
            Zapus princeps (Western Jumping Mouse)
            Zapus trinotatus (Pacific Jumping Mouse)
            Zapus trinotatus orarius (Point Reyes Jumping Mouse)

Those species marked with an asterisk (*) are non-native species that have been introduced to the California fauna.