There are at least 50 small mammal species known to occur in Yellowstone National Park.
Species are listed by common name, scientific name, typical habitat and relative abundance.
Raccoons Order: Carnivora Family: Procyonidae
Raccoon, Procyon lotor, rivers, cottonwoods, rare
Badgers and weasels
Order: Carnivora Family: Mustelidae
Wolverine, Gulo gulo, alpine, coniferous forests, rare North American river otter, Lontra canadensis, rivers, lakes, ponds, common Pacific marten, Martes caurina, coniferous forests, common American ermine, Mustela richardsonii, willows to spruce/fir forests, common Long-tailed weasel, Neogale frenata, willows to spruce/fir forests, common American mink, Neogale vison, riparian forests, occasional Fisher, Pekania pennanti, forests, rare American badger, Taxidea taxus, sagebrush, common
Skunks Order: Carnivora Family: Mephitidae
Striped skunk, Mephitis mephitis, riparian to forest, rare
Hares and rabbits
Order: Lagomorpha Family: Leporidae
Snowshoe hare, Lepus americanus, forests, willows, common White-tailed jackrabbit, Lepus townsendii, sagebrush, grasslands, common Desert cottontail, Sylvilagus audubonii, shrub lands, common Mountain cottontail, Sylvilagus nuttallii, shrub lands, common
Pikas Order: Lagomorpha Family: Ochotonidae
American pika, Ochotona princeps, rocky slopes, common
Shrews
Order: Soricomorpha Family: Soricidae Dusky shrew, Sorex monticolus, moist meadows, forests, common Masked shrew, Sorex cinereus, moist meadows, forests, common American water shrew, Sorex palustris, moist meadows, forests, common Preble's shrew, Sorex preblei, moist meadows, forests, rare, if present Dwarf shrew, Sorex nanus, moist meadows, forests, rare
Beaver Order: Rodentia Family: Castoridae
Beaver, Castor canadensis, ponds, streams, approximately 500
Squirrels
Order: Rodentia Family: Sciuridae Least chipmunk, Tamias minimus, forests, common Uinta chipmunk, Tamias umbrinus, forests, common Yellow-pine chipmunk, Tamias amoenus, forests, common Yellow-bellied marmot, Marmota flaviventris, rocky slopes, common Golden-mantled ground squirrel, Callospermophilus lateralis, forests, rocky slopes, common Northern flying squirrel, Glaucomys sabrinus, forests, occasional American red squirrel, Tamiasciurus hudsonicus, forests, common Uinta ground squirrel, Urocitellus armatus, sagebrush, meadows, common
Pocket gophers Order: Rodentia Family: Geomyidae
Northern pocket gopher, Thomomys talpoides, sagebrush, meadows, forests, 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
Muskrats, voles and woodrats
Order: Rodentia Family: Cricetidae
Muskrat, Ondatra zibethicus, streams, lakes, ponds, common Western heather vole, Phenacomys intermedius, sagebrush to forests, occasional Long-tailed vole, Microtus longicaudus, moist meadows, common Meadow vole, Microtus pennsylvanicus, moist meadows, common Montane vole, Microtus montanus, moist meadows, common Southern red-backed vole, Myodes gapperi, dense forests, common Water vole, Microtus richardsoni, riparian, occasional Bushy-tailed woodrat, Neotoma cinerea, rocky slopes, common
Porcupines Order: Rodentia Family: Erethizontidae
North American porcupine, Erethizon dorsatum, forests, sagebrush, willows, common
Bats
Order: Chiroptera Family: Vespertilionidae
Big brown bat, Eptesicus fuscus, roost in sheltered areas, common Fringe-tailed bat, Myotis thysanodes, roost in cliffs, large snags, uncommon Hoary bat, Lasiurus cinereus, roost in trees. uncommon Little brown bat, Myotis lucifugus, roost in caves, buildings, trees, common Long-eared bat, Myotis evotis, roost in cliffs, buildings, uncommon Long-legged bat, Myotis volans, roost in tree cavities, cliffs, buildings, common Silver-haired bat, Lasionycteris noctivagans, roost in trees, including snags, common Western small-footed bat, Myotis ciliolabrum, roost in rocky areas, caves, rare, if present Townsend's big-eared bat, Corynorhinus townsendii, roost in caves, uncommon Yuma bat, Myotis yumanensis, roost in caves, buildings, trees. rare, if present
See also Animals of Yellowstone Mammals of Yellowstone National Park
Further reading
Notes