There are 115 mammal species known to occur in Montana. Among Montana's mammals, three are listed as endangered or threatened and the Montana Department of Fish, Wildlife and Parks lists a number of species as species of concern. Species are listed by common and scientific names, as per R. S. Hoffman and D. L. Pattie, A Guide to Montana Mammals, 1968. New World opossums (Order: Didelphimorphia) Family: Didelphidae (true opossums) Virginia opossum, Didelpis virginiana introduced Lagomorphs (Order: Lagomorpha) Family: Leporidae (rabbits and hares) Pygmy rabbit, Brachylagus idahoensis Snowshoe hare, Lepus americanus Black-tailed jackrabbit, Lepus californicus White-tailed jackrabbit, Lepus townsendii Desert cottontail, Sylvilagus audubonii Eastern cottontail, Sylvilagus floridanus Mountain cottontail, Sylvilagus nuttallii Family: Ochotonidae (pikas) American pika, Ochotona princeps Even-toed ungulates (Order: Artiodactyla) Family: Antilocapridae (pronghorns) Pronghorn, Antilocapra americana Family: Bovidae (bovids) American bison, Bison bison Mountain goat, Oreamnos americanus Bighorn sheep, Ovis canadensis Family: Cervidae (deer) Moose, Alces alces Elk, Cervus canadensis Caribou, Rangifer tarandus extirpated, vagrant Boreal woodland caribou, R. t. caribou extirpated, vagrant Mule deer, Odocoileus hemionus White-tailed deer, Odocoileus virginianius Carnivorans (Order: Carnivora) Family: Ursidae (bears) American black bear, Ursus americanus Brown bear, Ursus arctos Grizzly bear, U. a. horribilis Family: Procyonidae (procyonids) Raccoon, Procyon lotor Family: Felidae (cats) Canada lynx, Lynx canadensis Bobcat, Lynx rufus Cougar, Puma concolor Family: Canidae (canids) Coyote, Canis latrans Gray wolf, Canis lupus Northern Rocky Mountain wolf, C. l. irremotus Great Plains wolf, C. l. nubilus extinct Northwestern wolf, C. l. occidentalus introduced Gray fox, Urocyon cinereoargentus Swift fox, Vulpes velox Red fox, Vulpes vulpes Family: Mustelidae (mustelids) Wolverine, Gulo gulo North American river otter, Lontra canadensis Pacific marten, Martes caurina Black-footed ferret, Mustela nigripes reintroduced Least weasel, Mustela nivalis American ermine, Mustela richardsonii Long-tailed weasel, Neogale frenata American mink, Neogale vison Fisher, Pekania pennanti American badger, Taxidea taxus Family: Mephitidae (skunks) Striped skunk, Mephitis mephitis Western spotted skunk, Spilogale gracilis Bats (Order: Chiroptera) Family: Vespertilionidae (vesper bats) Pallid bat, Antrozous pallidus Townsend's big-eared bat, Corynorhinus townsendii Big brown bat, Eptesicus fuscus Spotted bat, Euderma maculatum Silver-haired bat, Lasionycteris noctivagans Eastern red bat, Lasiurus borealis Hoary bat, Lasiurus cinereus California myotis, Myotis californicus Western small-footed myotis, Myotis ciliolabrum Long-eared myotis, Myotis evotis Little brown bat, Myotis lucifugus Northern myotis, Myotis septentrionalis Fringed myotis, Myotis thysanodes Long-legged bat, Myotis volans Shrews (Order: Eulipotyphla) Family: Soricidae Northern short-tailed shrew, Blarina brevicauda Arizona shrew, Sorex arcticus Cinereus shrew, Sorex cinereus Hayden's shrew, Sorex haydeni