Rodents: A Long List
Suborder Sciuromorpha (Squirrel-like rodents)
Family Sciuridae (Squirrels)
* Tree Squirrels:
* Eastern Gray Squirrel (Sciurus carolinensis)
* Fox Squirrel (Sciurus niger)
* Red Squirrel (Tamiasciurus hudsonicus)
* Abert's Squirrel (Sciurus aberti)
* Douglas Squirrel (Tamiasciurus douglasii)
* Flying Squirrel (Glaucomys spp.)
* Ground Squirrels:
* Ground Squirrel (Spermophilus spp.)
* Chipmunk (Tamias spp.)
* Marmot (Marmota spp.)
* Prairie Dogs:
* Black-tailed Prairie Dog (Cynomys ludovicianus)
* White-tailed Prairie Dog (Cynomys leucurus)
* Gunnison's Prairie Dog (Cynomys gunnisoni)
* Squirrels:
* Pygmy Squirrel (Sciurillus spp.)
* Giant Squirrel (Ratufa spp.)
* Other:
* Marmot (Marmota spp.)
* Rock Squirrel (Spermophilus variegatus)
* Striped Ground Squirrel (Spermophilus tridecemlineatus)
Family Castoridae (Beavers)
* Beaver (Castor spp.)
Family Geomyidae (Pocket Gophers)
* Pocket Gopher (Geomys spp.)
Family Heteromyidae (Kangaroo Rats, Pocket Mice)
* Kangaroo Rat (Dipodomys spp.)
* Pocket Mouse (Perognathus spp.)
Family Zapodidae (Jumping Mice)
* Jumping Mouse (Zapus spp.)
Suborder Myomorpha (Mouse-like rodents)
Family Cricetidae (Hamsters, voles, mice)
* Voles:
* Meadow Vole (Microtus pennsylvanicus)
* Red-backed Vole (Myodes gapperi)
* Water Vole (Arvicola terrestris)
* Long-tailed Vole (Microtus longicaudus)
* Mice:
* House Mouse (Mus musculus)
* White-footed Mouse (Peromyscus leucopus)
* Deer Mouse (Peromyscus maniculatus)
* Harvest Mouse (Reithrodontomys spp.)
* Rats:
* Norway Rat (Rattus norvegicus)
* Roof Rat (Rattus rattus)
* Hamsters:
* Golden Hamster (Mesocricetus auratus)
* Syrian Hamster (Mesocricetus auratus)
* European Hamster (Cricetus cricetus)
* Dwarf Hamster (Phodopus spp.)
* Other:
* Lemming (Lemmus spp.)
* Muskrat (Ondatra zibethicus)
* Field Mouse (Apodemus spp.)
Family Muridae (Old World rats and mice)
* Rats:
* Black Rat (Rattus rattus)
* Brown Rat (Rattus norvegicus)
* Mice:
* House Mouse (Mus musculus)
* Field Mouse (Apodemus spp.)
* Other:
* Spiny Mouse (Acomys spp.)
* Giant Rat (Cricetomys gambianus)
* Bandicoot Rat (Bandicota spp.)
Family Erethizontidae (New World Porcupines)
* North American Porcupine (Erethizon dorsatum)
Family Hystricidae (Old World Porcupines)
* Indian Crested Porcupine (Hystrix indica)
* African Crested Porcupine (Hystrix cristata)
Family Dipodidae (Jerboas)
* Jerboa (Jaculus spp.)
Family Spalacidae (Mole Rats)
* Naked Mole Rat (Heterocephalus glaber)
* Common Mole Rat (Spalax spp.)
Suborder Hystricomorpha (Porcupine-like rodents)
Family Chinchillidae (Chinchillas, Viscachas)
* Chinchilla (Chinchilla spp.)
* Viscacha (Lagidium spp.)
Family Dasyproctidae (Agoutis, Pacas)
* Agouti (Dasyprocta spp.)
* Paca (Cuniculus paca)
Family Capromyidae (Hutia)
* Hutia (Capromys spp.)
Family Caviidae (Capybara, Maras, Cavies)
* Capybara (Hydrochoerus hydrochaeris)
* Mara (Dolichotis spp.)
* Guinea Pig (Cavia porcellus)
Family Dinomyidae (Giant Rat)
* Giant Rat (Dinomys branickii)
Family Echimyidae (Spiny Rats)
* Spiny Rat (Echimys spp.)
Suborder Anomaluromorpha (Jumping Mice)
Family Anomaluridae (Scaly-tailed Squirrels)
* Scaly-tailed Squirrel (Anomalurus spp.)
Suborder Castorimorpha (Beaver-like rodents)
Family Castoridae (Beavers)
* Beaver (Castor spp.)
Family Bathyergidae (Mole Rats)
* Naked Mole Rat (Heterocephalus glaber)
* Cape Mole Rat (Georychus capensis)
Family Pedetidae (Springhares)
* Springhare (Pedetes capensis)
Note: This is not an exhaustive list, as there are many more rodent species worldwide.