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Rocky Mountain National Parka photo of park advocate Enos Mills
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Rocky Mountain National Park
Mammals

Many species of wildlife inhabit the park, yet visitors are often most attracted to their fellow mammals. Altogether, 66 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* from Rocky Mountain National Park


Common Name

Scientific Name

Picture

Pronghorn Antelope (accidental)

Antilocapra americana

Courtesy Agricultural Research Service

Bison (extirpated)

Bison bison

Courtesy NPS

Bighorn Sheep

Ovis canadensis

Courtesy NPS

Coyote

Canis latrans

Courtesy NPS

Gray Wolf (extirpated)

Canis lupus

Courtesy FWS

Gray Fox

Urocyon cinereoargentues

Courtesy FWS

Red Fox

Vulpes vulpes

Courtesy NPS

Beaver

Castor canadensis

Courtesy NPS

Moose

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

 

Muskrat

Ondatra zibethicus

Courtesy NPS

Rock Mouse

Peromyscus difficilis

 

Deer Mouse

Peromyscus maniculatus

Courtesy NPS

Heather Vole

Phenacomys intermedius

 

Porcupine

Erethizon dorsatum

Courtesy NPS

Mountain Lion

Felis concolor

Courtesy FWS

Lynx (extipated)

Felis lynx

Courtesy FWS

Bobcat

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

Wolverine

Gulo gulo

 

River Otter

Lutra canadensis

Courtesy NPS

Marten

Martes americanus

 

Striped Skunk

Memphitis mephitis

 

Ermine

Mustela erminea

 

Long-tailed Weasel

Mustela frenata

Courtesy NPS

Mink

Mustela vison

 

Western Spotted Skunk

Spilogale gracilis

Courtesy of and copyright by Roger Baldwin

Badger

Taxidea taxus

Courtesy NPS

Pika

Ochotona princeps

Courtesy NPS

Raccoon

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

 

Chickaree

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

 

* 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
a photo of the mountains at treeline  

Did You Know?
Temperature causes tree line. Trees need an average growing temperature of about 50 degrees fahrenheit.

Last Updated: August 13, 2008 at 11:14 EST