Mammals of Montana
The mammals most often spotted in Montana, ranked by recent research-grade observations.
66,643
recent observations
50
species listed
50
mammals
Naturalists have logged 66,643 research-grade observations across the 50 most-recorded species in Montana. The most frequently seen is the American Bison, with 10,571 recorded sightings.
Rarer finds confirmed in Montana include Grizzly Bear, Gray Wolf and Bobcat - uncommon enough that a sighting is worth logging.
Most-observed mammals in Montana
American Bison
Bos bison
10,571 observations · iNaturalist
Wapiti
Cervus canadensis
6,718 observations
American Black Bear
Ursus americanus
3,960 observations
Mule Deer
Odocoileus hemionus
3,744 observations
Pronghorn
Antilocapra americana
3,515 observations
Bighorn Sheep
Ovis canadensis
3,312 observations
White-tailed Deer
Odocoileus virginianus
3,131 observations
Moose
Alces alces
2,715 observations
Brown Bear
Ursus arctos
2,569 observations
Mountain Goat
Oreamnos americanus
2,451 observations
Columbian Ground Squirrel
Urocitellus columbianus
2,355 observations
American Red Squirrel
Tamiasciurus hudsonicus
2,325 observations
Common Golden-mantled Ground Squirrel
Callospermophilus lateralis
2,116 observations
Coyote
Canis latrans
2,039 observations
Yellow-bellied Marmot
Marmota flaviventris
1,790 observations
Uinta Ground Squirrel
Urocitellus armatus
1,505 observations · iNaturalist
Gray Wolf
Canis lupus
1,387 observations
Red Fox
Vulpes vulpes
1,169 observations
Hoary Marmot
Marmota caligata
958 observations
Black-tailed Prairie Dog
Cynomys ludovicianus
942 observations
American Pika
Ochotona princeps
666 observations
American Beaver
Castor canadensis
596 observations
Mountain Cottontail
Sylvilagus nuttallii
578 observations
Eastern Fox Squirrel
Sciurus niger
554 observations
Muskrat
Ondatra zibethicus
538 observations
Snowshoe Hare
Lepus americanus
485 observations
Least Chipmunk
Neotamias minimus
421 observations
American Badger
Taxidea taxus
388 observations
Richardson's Ground Squirrel
Urocitellus richardsonii
334 observations
North American Porcupine
Erethizon dorsatum
305 observations
Yellow-pine Chipmunk
Neotamias amoenus
297 observations
Common Raccoon
Procyon lotor
259 observations
Mountain Lion
Puma concolor
189 observations
Striped Skunk
Mephitis mephitis
171 observations
North American River Otter
Lontra canadensis
169 observations
Long-tailed Weasel
Neogale frenata
165 observations · iNaturalist
American Mink
Neogale vison
135 observations
Western Deer Mouse
Peromyscus sonoriensis
130 observations · iNaturalist
White-tailed Jackrabbit
Lepus townsendii
123 observations
Bobcat
Lynx rufus
108 observations
Uinta Chipmunk
Neotamias umbrinus
108 observations · iNaturalist
Pacific Marten
Martes caurina
104 observations · iNaturalist
Northern Pocket Gopher
Thomomys talpoides
90 observations · iNaturalist
Domestic Horse
Equus caballus
87 observations · iNaturalist
Desert Cottontail
Sylvilagus audubonii
84 observations
Domestic Cat
Felis catus
77 observations
Bushy-tailed Woodrat
Neotoma cinerea
66 observations
European Rabbit
Oryctolagus cuniculus
58 observations · iNaturalist
Red-tailed Chipmunk
Neotamias ruficaudus
44 observations · iNaturalist
American Ermine
Mustela richardsonii
42 observations · iNaturalist
Mammals in nearby places
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