This list of mammals of Colorado lists every wild mammal species seen in the U.S. state of Colorado, based on the list published by the Colorado Division of Wildlife. It does not include species found only in captivity. Species in this list are grouped by order and then by family within each order. The common name for each species is followed by its binomial name.
The following codes are used to designate some species:
EN - Species is listed as endangered by the IUCN.
NT - Species is listed as near threatened by the IUCN.
EX - Species has been extirpated from Colorado, but can still be found outside the state.
Order: Didelphimorphia Family: Didelphidae
Virginia opossum, Didelphis virginiana
Order: Cingulata Family: Dasypodidae
Nine-banded armadillo, Dasypus novemcinctus
Order: Rodentia Family: Castoridae
North American beaver, Castor canadensis
Order: Rodentia Family: Geomyidae
Plains pocket gopher, Geomys bursarius
Yellow-faced pocket gopher, Pappogeomys castanops
Botta's pocket gopher, Thomomys bottae
Northern pocket gopher, Thomomys talpoides
Order: Rodentia Family: Heteromyidae
Ord's kangaroo rat, Dipodomys ordii
Hispid pocket mouse, Chaetodipus hispidus
Olive-backed pocket mouse, Perognathus fasciatus
Plains pocket mouse, Perognathus flavescens
Silky pocket mouse, Perognathus flavus
Great Basin pocket mouse, Perognathus merriami
Order: Rodentia Family: Erethizontidae
North American porcupine, Erethizon dorsatum
Order: Rodentia Family: Dipodidae
Meadow jumping mouse, Zapus hudsonius
Western jumping mouse, Zapus princeps
Order: Rodentia Family: Cricetidae
Southern red-backed vole, Clethrionomys gapperi
Sagebrush vole, Lemmiscus curtatus
Long-tailed vole, Microtus longicaudus
Mexican vole, Microtus mexicanus
Montane vole, Microtus montanus
Prairie vole, Microtus ochrogaster
Meadow vole, Microtus pennsylvanicus
Muskrat, Ondatra zibethicus
Western heather vole, Phenacomys intermedius
White-throated woodrat, Neotoma albigula
Bushy-tailed woodrat, Neotoma cinerea
Eastern woodrat, Neotoma floridana
Desert woodrat, Neotoma lepida
Mexican woodrat, Neotoma mexicana
Southern plains woodrat, Neotoma micropus
Brush mouse, Peromyscus boylii
Canyon mouse, Peromyscus crinitus
White-footed mouse, Peromyscus leucopus
Deer mouse, Peromyscus maniculatus
Northern rock mouse, Peromyscus nasutus
Pinyon mouse, Peromyscus truei
Western harvest mouse, Reithrodontomys megalotis
Plains harvest mouse, Reithrodontomys montanus
Northern grasshopper mouse, Onychomys leucogaster
Hispid cotton rat, Sigmodon hispidus
Order: Rodentia Family: Sciuridae
Abert's squirrel, Sciurus aberti
Fox squirrel, Sciurus niger
American red squirrel, Tamiasciurus hudsonicus
White-tailed antelope squirrel, Ammospermophilus leucurus
Gunnison's prairie dog, Cynomys gunnisoni
White-tailed prairie dog, Cynomys leucurus
Black-tailed prairie dog, Cynomys ludovicianus
Yellow-bellied marmot, Marmota flaviventris
Wyoming ground squirrel, Spermophilus elegans
Golden-mantled ground squirrel, Spermophilus lateralis
Spotted ground squirrel, Spermophilus spilosoma
Thirteen-lined ground squirrel, Spermophilus tridecemlineatus
Rock squirrel, Spermophilus variegatus
Cliff chipmunk, Tamias dorsalis
Least chipmunk, Tamias minimus
Colorado chipmunk, Tamias quadrivittatus
Hopi chipmunk, Tamias rufus
Uinta chipmunk, Tamias umbrinus
Order: Lagomorpha Family: Ochotonidae
American pika, Ochotona princeps
Order: Lagomorpha Family: Leporidae
Desert cottontail, Sylvilagus audubonii
Eastern cottontail, Sylvilagus floridanus
Mountain cottontail, Sylvilagus nuttallii
Pygmy rabbit, Brachylagus idahodensis
Snowshoe hare, Lepus americanus
Black-tailed jackrabbit, Lepus californicus
White-tailed jackrabbit, Lepus townsendii
Order: Soricomorpha Family: Soricidae
Elliot's short-tailed shrew, Blarina hylophaga
North American least shrew, Cryptotis parva
Crawford's gray shrew, Notiosorex crawfordi
Cinereus shrew, Sorex cinereus
American pygmy shrew, Sorex hoyi
Merriam's shrew, Sorex merriami
Montane shrew, Sorex monticolus
Dwarf shrew, Sorex nanus
American water shrew, Sorex palustris
Order: Soricomorpha Family: Talpidae
Eastern mole, Scalopus aquaticus
Order: Chiroptera Family: Vespertilionidae
Silver-haired bat, Lasionycteris noctivagans
California myotis, Myotis californicus
Western small-footed myotis, Myotis ciliolabrum
Long-eared myotis, Myotis evotis
Little brown bat, Myotis lucifugus
Fringed myotis, Myotis thysanodes
Long-legged myotis, Myotis volans
Yuma myotis, Myotis yumanensis
Pallid bat, Antrozous pallidus
Big brown bat, Eptesicus fuscus
Spotted bat, Euderma maculatum
Eastern red bat, Lasiurus borealis
Hoary bat, Lasiurus cinereus
Western pipistrelle, Parastrellus hesperus
Eastern pipistrelle, Perimyotis subflavus
Townsend's big-eared bat, Corynorhinus townsendii
Order: Chiroptera Family: Molossidae
Big free-tailed bat, Nyctinomops macrotis
Mexican free-tailed bat, Tadarida brasiliensis
Order: Carnivora Family: Felidae
Bobcat, Lynx rufus
Canada lynx, Lynx canadensis
Cougar, Puma concolor
Order: Carnivora Family: Canidae
Kit fox, Vulpes macrotis
Swift fox, Vulpes velox
Red fox, Vulpes vulpes
Gray fox, Urocyon cinereoargenteus
Coyote, Canis latrans
Gray wolf, Canis lupus EX (occasional sightings occur in CO of wandering individuals from neighboring states)
Order: Carnivora Family: Ursidae
American black bear, Ursus americanus
Grizzly bear, Ursus arctos EX
Order: Carnivora Family: Mephitidae
Western spotted skunk, Spilogale gracilis
Eastern spotted skunk, Spilogale putorius
Striped skunk, Mephitis mephitis
American hog-nosed skunk, Conepatus leuconotus
Order: Carnivora Family: Mustelidae
Ermine, Mustela erminea
Long-tailed weasel, Mustela frenata
Black-footed ferret, Mustela nigripes EN
American mink, Mustela vison
American marten, Martes americana
American badger, Taxidea taxus
North American river otter, Lontra canadensis
Wolverine, Gulo gulo EX
Order: Carnivora Family: Procyonidae
Ringtail, Bassariscus astutus
Raccoon, Procyon lotor
Order: Artiodactyla Family: Antilocapridae
Pronghorn, Antilocapra americana
Order: Artiodactyla Family: Cervidae
Elk, Cervus canadensis
Moose, Alces alces
Mule deer, Odocoileus hemionus
White-tailed deer, Odocoileus virginianus
Order: Artiodactyla Family: Bovidae
American bison, Bison bison NT
Mountain goat, Oreamnos americanus
Bighorn sheep, Ovis canadensis
