List of mammals of Yellowstone National Park

There are at least 67 species of mammals known to live within Yellowstone National Park, a 2219791 acre 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