# List of mammals of Yellowstone National Park

There are at least 67 species of mammals known to live within Yellowstone National Park, a 2,219,791 acres (898,318 ha) protected area in the Rocky Mountains of Wyoming, Montana, and Idaho. Species are listed by common name, scientific name, typical habitat, and relative abundance.

## Canids

Order: Carnivora Family: Canidae
* Coyote (Canis latrans) valleys, grasslands, forests – common
* Northwestern wolf (Canis lupus occidentalis) valleys, grasslands, forests – common
* Wasatch mountain fox (Vulpes vulpes macroura) meadows, forests – common

## Bears

Order: Carnivora Family: Ursidae
* Grizzly bear (Ursus arctos horribilis) grasslands, forests, alpine tundra – common
* American black bear (Ursus americanus) forests – common

## Raccoons

Order: Carnivora Family: Procyonidae
* Common raccoon (Procyon lotor) rivers, cottonwoods – rare

## Felids

Order: Carnivora Family: Felidae
* Cougar (Puma concolor) forests, rock outcrops – uncommon
* Canada lynx (Lynx canadensis) coniferous forests – rare
* Bobcat (Lynx rufus) coniferous forests, rock outcroppings – common

## Weasels

Order: Carnivora Family: Mustelidae
* Wolverine (Gulo gulo) alpine tundra, coniferous forests – rare
* North American river otter (Lontra canadensis) rivers – common
* Pacific marten (Martes caurina) coniferous forests – common
* American ermine or short-tailed weasel (Mustela richardsonii) willows, spruce forests – common
* Long-tailed weasel (Neogale frenata) forests, meadows, wetlands – common
* American mink (Neogale vison) streams, rivers – uncommon
* Fisher (Pekania pennanti) forests – rare
* American badger (Taxidea taxus) grasslands, sagebrush – common

## Skunks

Order: Carnivora Family: Mephitidae
* Striped skunk (Mephitis mephitis) riparian forests – rare

## Rabbits and hares

Order: Lagomorpha Family: Leporidae
* Mountain cottontail (Sylvilagus nuttallii) shrublands – common
* Desert cottontail (Sylvilagus audubonii) shrublands – common
* Snowshoe hare (Lepus americanus) coniferous forests, willows – common
* White-tailed jackrabbit (Lepus townsendii) sagebrush, grasslands – common

## Pikas

Order: Lagomorpha Family: Ochotonidae
* American Pika (Ochotona princeps) alpine tundra, rocky areas – common

## Bovids

Order: Artiodactyla Family: Bovidae
* Plains bison (Bison bison bison) grasslands, sagebrush, shrubland – abundant
* Rocky Mountain bighorn sheep (Ovis canadensis canadensis) cliffs, rock outcroppings, alpine tundra – uncommon
* Mountain Goat (Oreamnos americanus) cliffs, rock outcroppings, alpine tundra – uncommon (non-native)

## Pronghorn

Order: Artiodactyla Family: Antilocapridae
* Pronghorn (Antilocapra americana) sagebrush, grassland – common

## Elk, moose, and deer

Order: Artiodactyla Family: Cervidae
* Northwestern white-tailed deer (Odocoileus virginianus ochrourus) grasslands, forests – uncommon
* Rocky Mountain mule deer (Odocoileus hemionus hemionus) grasslands, shrubland, forests – common
* Rocky Mountain elk (Cervus canadensis nelsoni) grasslands, shrubland, forest, alpine tundra – abundant
* Shiras moose (Alces alces shirasi) grasslands, forests, river, lakes – uncommon

## Shrews

Order: Soricomorpha Family: Soricidae
* Dusky shrew (Sorex monticolus) meadows, forests – common
* Masked shrew (Sorex cinereous) meadows, forests – common
* American water shrew (Sorex palustris) meadows, riparian areas – common
* Preble's shrew (Sorex preblei) meadows, forests – rare, if present
* Dwarf shrew (Sorex nanus) meadows, forests – common.

## Beavers

Order: Rodentia Family: Castoridae
* American beaver (Castor canadensis) riparian areas – fairly common, increasing

## Squirrels

Order: Rodentia Family: Sciuridae
* Least chipmunk (Neotamias minimus) meadows, forests – common
* Uinta chipmunk (Neotamias umbrinus) meadows, forests – common
* Yellow-pine chipmunk (Neotamias amoenus) meadows, forests – common
* American red squirrel (Tamiasciurus hudsonicus) coniferous forests – common
* Northern flying squirrel (Glaucomys sabrinus) forests – occasional
* Yellow-bellied marmot (Marmota flaventris) forests, meadows, rocky areas – common
* Uinta ground squirrel (Urocitellus armatus) meadows, sagebrush – common
* Golden-mantled ground squirrel (Callospermophilus lateralis) meadows, forests, rocky areas, alpine tundra – common

## Voles and Woodrats

Order: Rodentia Family: Cricetidae
* Common muskrat (Ondatra zibethicus) riparian – occasional
* Western heather vole (Phenacomys intermedius) sagebrush, grasslands, forest – occasional
* Water vole (Microtus richardsoni) riparian – occasional
* Long-tailed vole (Microtus longicaudus) meadows – common
* Southern red-backed vole (Myodes gapperi) coniferous forests – common
* Meadow vole (Microtus pennsylvanicus) meadows – common
* Montane vole (Microtus montanus) meadows, sagebrush, riparian – common
* Bushy-tailed woodrat (Neotoma cinerea) rocky areas – common

## Mice

Order: Rodentia Family: Cricetidae
* Deer mouse (Peromyscus maniculatus) grasslands – common

## Jumping mice

Order: Rodentia Family: Dipodidae
* Western jumping mouse (Zapus princeps) riparian – occasional

## Porcupines

Order: Rodentia Family: Erethizontidae
* North American porcupine (Erethizon dorsatum) forests, sagebrush, riparian – common

## Bats

Order: Chiroptera Family: Vespertilionidae
* Little brown bat (Myotis lucifugus) roosts in caves, trees, buildings – common
* Big brown bat (Eptesicus fuscus) roosts in sheltered areas – common
* Long-eared myotis (Myotis evotis) roosts on cliffs, buildings – uncommon
* Long-legged myotis (Myotis volans) roosts in cliffs, tree cavities, buildings – common
* Townsend's big-eared bat (Coryhinus townsendii) roosts in caves – uncommon
* Fringe-tailed bat (Myotis thysanodes) roosts in cliffs, snags – uncommon
* Hoary bat (Lasiurus cinereus) roosts in trees – uncommon
* Silver-haired bat (Lasionycteris noctivagans) roosts in trees, snags – common
* Spotted bat (Euderma maculatum) roosts on cliffs, trees – uncommon
* Pallid bat (Antrozous pallidus) roosts on cliffs, caves, buildings – uncommon
* California myotis (Myotis californicus) roosts in trees, rock crevices, and buildings
* Western small-footed myotis (Myotis ciliolabrum) roosts in caves, rocky areas – rare
* Yuma myotis (Myotis yumanensis) roosts in caves, buildings, trees – rare