• Photo of early morning clouds hanging low in the valley with mountains of the Continental Divide stretched out above. NPS Photo/Schonlau

    Rocky Mountain

    National Park Colorado



This cow elk was resting along the Colorado River Trail in the Kawuneeche Valley.

Photo by L. Benton

Many species of wildlife inhabit the park, yet visitors are often most attracted to their fellow mammals. Altogether, 67 mammal species are known to be native to the area, but three of these - grizzly bear, gray wolf, bison- have been extirpated (e.g., are locally extinct), and two others - lynx and wolverine - are either extirpated or extremely rare.

Little is known about population trends in the park for most of the mammals, with the exception of elk, mule deer, and bighorn sheep, which have been monitored to some extent by park staff and researchers.

Mammals Reported* within Rocky Mountain National Park

* Information from:
Armstrong, David M. 1987. Rocky Mountain Mammals: A Handbook of Mammals of Rocky Mountain National Park and Vicinity. Revised Edition. Colorado Associated University Press in cooperation with Rocky Mountain Nature Association, 223pp.

Updated 10/28/03

Common Name

Scientific Name


Pronghorn Antelope (accidental)

Antilocapra americana

Courtesy Agricultural Research Service

Bison (extirpated)

Bison bison

Courtesy NPS

Bighorn Sheep

Ovis canadensis

Courtesy NPS


Canis latrans

Courtesy NPS

Gray Wolf (extirpated)

Canis lupus

Courtesy FWS

Gray Fox

Urocyon cinereoargentues

Courtesy FWS

Red Fox

Vulpes vulpes

Courtesy NPS


Castor canadensis

Courtesy NPS


Alces alces

Courtesy NPS

Wapiti, or American Elk

Cervus elaphus canadensis

Courtesy NPS

Mule Deer

Odocoileus hemionus

Courtesy NPS

White-tailed Deer

Odocoileus virginianus

Courtesy FWS

Southern Red-backed Vole

Clethrionomys gapperi

Sagebrush Vole

Lagurus curtatus

Long-tailed Vole

Microtus longicaudus

Montane Vole

Microtus montanus

Bushy-tailed Woodrat

Neotoma cinerea

Courtesy USGS

Mexican Woodrat

Neotoma mexicana


Ondatra zibethicus

Courtesy NPS

Rock Mouse

Peromyscus difficilis

Deer Mouse

Peromyscus maniculatus

Courtesy NPS

Heather Vole

Phenacomys intermedius


Erethizon dorsatum

Courtesy NPS

Mountain Lion

Felis concolor

Courtesy FWS

Lynx (extipated)

Felis lynx

Courtesy FWS


Felis rufus

Courtesy NPS

Northern Pocket Gopher

Thomomys talpoides

Courtesy NPS

Snowshoe Hare

Lepus americanus

White-tailed Jackrabbit

Lepus townsendii

Courtesy FWS

Nuttall's Cottontail

Sylvilagus nuttallii

Courtesy NPS


Gulo gulo

River Otter

Lutra canadensis

Courtesy NPS


Martes americanus

Striped Skunk

Memphitis mephitis


Mustela erminea

Long-tailed Weasel

Mustela frenata

Courtesy NPS


Mustela vison

Western Spotted Skunk

Spilogale gracilis

Courtesy of and copyright by Roger Baldwin


Taxidea taxus

Courtesy NPS


Ochotona princeps

Courtesy NPS


Procyon lotor

Courtesy FWS

Yellow-bellied Marmot

Marmota flaviventris

Courtesy NPS

Abert's Squirrel

Sciurus aberti

Courtesy NPS

Wyoming Ground Squirrel

Spermophilus elegans

Courtesy NPS

Golden-mantled Ground Squirrel

Spermophilus lateralis

Courtesy NPS

Rock Squirrel

Spermophilus variegatus

Least Chipmunk

Tamias minimus

Courtesy NPS

Colorado Chipmunk

Tamias quadrivittatus

Uinta Chipmunk

Tamias umbrinus


Tamiasciurus hudsonicus

Courtesy NPS

Masked Shrew

Sorex cinereus

Pygmy Shrew

Sorex hoyi

Merriam's Shrew

Sorex merriami

Montane Shrew

Sorex monticolus

Dwarf Shrew

Sorex nanus

Water Shrew

Sorex palustris

Black Bear

Ursus americanus

Courtesy of and copyright by Roger Baldwin

Grizzly Bear (extirpated)

Ursus arctos

Courtesy FWS

Western Jumping Mouse

Zapus princeps

Big Brown Bat

Eptesicus fuscus

Silver-haired Bat

Lasionycteris noctivagans

Hoary Bat

Lasiurus cinereus

Long-eared Myotis

Myotis evotis

Small-footed Myotis

Myotis leibii

Little Brown Bat

Myotis lucifugus

Courtesy FWS

Long-legged Myotis

Myotis volans

Townsend's Big-eared Bat

Plecotus townsendii

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