Places › States › Montana › Mammals

Mammals of Montana

The mammals most often spotted in Montana, ranked by recent research-grade observations.

71,349
recent observations
50
species listed
50
mammals

Naturalists have logged 71,349 research-grade observations across the 50 most-recorded species in Montana. The most frequently seen is the American Bison, with 11,417 recorded sightings.

Rarer finds confirmed in Montana include Grizzly Bear, Gray Wolf and Bobcat - uncommon enough that a sighting is worth logging.

Grizzly BearGray WolfBobcat

Most-observed mammals in Montana

American Bison
Bos bison
11,417 observations · iNaturalist
Wapiti
Cervus canadensis
7,163 observations
American Black Bear
Ursus americanus
4,222 observations
Mule Deer
Odocoileus hemionus
4,040 observations
Pronghorn
Antilocapra americana
3,801 observations
Bighorn Sheep
Ovis canadensis
3,521 observations
White-tailed Deer
Odocoileus virginianus
3,339 observations
Moose
Alces alces
2,891 observations
Brown Bear
Ursus arctos
2,732 observations
Mountain Goat
Oreamnos americanus
2,605 observations
American Red Squirrel
Tamiasciurus hudsonicus
2,577 observations
Columbian Ground Squirrel
Urocitellus columbianus
2,471 observations
Common Golden-mantled Ground Squirrel
Callospermophilus lateralis
2,266 observations
Coyote
Canis latrans
2,165 observations
Yellow-bellied Marmot
Marmota flaviventris
1,882 observations
Uinta Ground Squirrel
Urocitellus armatus
1,578 observations
Gray Wolf
Canis lupus
1,462 observations
Red Fox
Vulpes vulpes
1,245 observations
Hoary Marmot
Marmota caligata
1,010 observations
Black-tailed Prairie Dog
Cynomys ludovicianus
990 observations
American Pika
Ochotona princeps
734 observations
Mountain Cottontail
Sylvilagus nuttallii
633 observations
American Beaver
Castor canadensis
624 observations
Eastern Fox Squirrel
Sciurus niger
580 observations
Muskrat
Ondatra zibethicus
578 observations
Snowshoe Hare
Lepus americanus
517 observations
Least Chipmunk
Neotamias minimus
477 observations
American Badger
Taxidea taxus
410 observations
Richardson's Ground Squirrel
Urocitellus richardsonii
366 observations
Yellow-pine Chipmunk
Neotamias amoenus
328 observations
North American Porcupine
Erethizon dorsatum
320 observations
Common Raccoon
Procyon lotor
279 observations
Mountain Lion
Puma concolor
200 observations
Striped Skunk
Mephitis mephitis
187 observations
North American River Otter
Lontra canadensis
181 observations
Long-tailed Weasel
Neogale frenata
177 observations · iNaturalist
American Mink
Neogale vison
145 observations
Western Deer Mouse
Peromyscus sonoriensis
144 observations
White-tailed Jackrabbit
Lepus townsendii
133 observations
Uinta Chipmunk
Neotamias umbrinus
129 observations
Bobcat
Lynx rufus
111 observations
Pacific Marten
Martes caurina
111 observations
Northern Pocket Gopher
Thomomys talpoides
106 observations
Domestic Horse
Equus caballus
92 observations
Desert Cottontail
Sylvilagus audubonii
91 observations
Domestic Cat
Felis catus
79 observations
Bushy-tailed Woodrat
Neotoma cinerea
73 observations
European Rabbit
Oryctolagus cuniculus
60 observations
Red-tailed Chipmunk
Neotamias ruficaudus
59 observations
American Ermine
Mustela richardsonii
48 observations

Built from recent research-grade iNaturalist observations. Identifications are community-sourced and may occasionally be wrong, and the ranking reflects where people record and photograph wildlife, so a species seen often here is not necessarily rare elsewhere. Some plants and animals are only out in certain seasons. Treat this as a lively snapshot of what people are finding, not a formal checklist.

Mammals in nearby places

Out spotting mammals in Montana?

Take Huck with you. Identify any mammal you find in seconds and build your collection.

Get Huck

Love mammals? Get Huck field notes

Spotting tips, new species, and the best of what people are finding in the wild - straight to your inbox.

By subscribing you agree to receive Huck emails. No spam, unsubscribe anytime. See our Privacy Policy.