Mammals of Montana
The mammals most often spotted in Montana, ranked by recent research-grade observations.
Most-observed mammals in Montana
American Bison
Bison bison
10,016 observations
Elk
Cervus canadensis
6,368 observations
American Black Bear
Ursus americanus
3,661 observations
Mule Deer
Odocoileus hemionus
3,446 observations
Pronghorn
Antilocapra americana
3,282 observations
Bighorn Sheep
Ovis canadensis
3,111 observations
White-tailed Deer
Odocoileus virginianus
2,958 observations
Moose
Alces alces
2,552 observations
Brown Bear
Ursus arctos
2,423 observations
Mountain Goat
Oreamnos americanus
2,204 observations
American Red Squirrel
Tamiasciurus hudsonicus
2,095 observations
Columbian Ground Squirrel
Urocitellus columbianus
2,057 observations
Coyote
Canis latrans
1,969 observations
Common Golden-mantled Ground Squirrel
Callospermophilus lateralis
1,910 observations
Yellow-bellied Marmot
Marmota flaviventris
1,619 observations
Gray Wolf
Canis lupus
1,350 observations
Uinta Ground Squirrel
Urocitellus armatus
1,277 observations · iNaturalist
Red Fox
Vulpes vulpes
1,098 observations
Black-tailed Prairie Dog
Cynomys ludovicianus
870 observations
Hoary Marmot
Marmota caligata
850 observations
American Pika
Ochotona princeps
611 observations
American Beaver
Castor canadensis
574 observations
Mountain Cottontail
Sylvilagus nuttallii
556 observations
Eastern Fox Squirrel
Sciurus niger
540 observations
Muskrat
Ondatra zibethicus
515 observations
Snowshoe Hare
Lepus americanus
462 observations
Least Chipmunk
Neotamias minimus
404 observations
American Badger
Taxidea taxus
363 observations
Richardson's Ground Squirrel
Urocitellus richardsonii
316 observations
North American Porcupine
Erethizon dorsatum
297 observations
Yellow-pine Chipmunk
Neotamias amoenus
285 observations
Common Raccoon
Procyon lotor
237 observations
Mountain Lion
Puma concolor
180 observations
Striped Skunk
Mephitis mephitis
163 observations
North American River Otter
Lontra canadensis
161 observations
Long-tailed Weasel
Neogale frenata
153 observations · iNaturalist
American Mink
Neogale vison
128 observations
Western Deer Mouse
Peromyscus sonoriensis
126 observations · iNaturalist
White-tailed Jackrabbit
Lepus townsendii
119 observations
Bobcat
Lynx rufus
102 observations
Pacific Marten
Martes caurina
101 observations · iNaturalist
Uinta Chipmunk
Neotamias umbrinus
97 observations · iNaturalist
Northern Pocket Gopher
Thomomys talpoides
87 observations · iNaturalist
Desert Cottontail
Sylvilagus audubonii
84 observations
Domestic Horse
Equus caballus
81 observations · iNaturalist
Domestic Cat
Felis catus
72 observations
Bushy-tailed Woodrat
Neotoma cinerea
65 observations
European Rabbit
Oryctolagus cuniculus
56 observations · iNaturalist
Red-tailed Chipmunk
Neotamias ruficaudus
44 observations · iNaturalist
American Ermine
Mustela richardsonii
40 observations · iNaturalist