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Mammals of Rocky Mountain National Park

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

21,198
recent observations
50
species listed
50
mammals

Naturalists have logged 21,198 research-grade observations across the 50 most-recorded species in Rocky Mountain. The most frequently seen is the Wapiti, with 6,016 recorded sightings.

Rarer finds confirmed in Rocky Mountain include Bobcat - uncommon enough that a sighting is worth logging.

Bobcat

Most-observed mammals in Rocky Mountain

Wapiti
Cervus canadensis
6,016 observations
Common Golden-mantled Ground Squirrel
Callospermophilus lateralis
3,173 observations
Yellow-bellied Marmot
Marmota flaviventris
2,505 observations
Moose
Alces alces
2,377 observations
Mule Deer
Odocoileus hemionus
2,301 observations
American Pika
Ochotona princeps
1,353 observations
Bighorn Sheep
Ovis canadensis
508 observations
Wyoming Ground Squirrel
Urocitellus elegans
498 observations
Least Chipmunk
Neotamias minimus
296 observations
Coyote
Canis latrans
283 observations
Fremont's Squirrel
Tamiasciurus fremonti
263 observations
Snowshoe Hare
Lepus americanus
195 observations
American Red Squirrel
Tamiasciurus hudsonicus
173 observations
Mountain Cottontail
Sylvilagus nuttallii
168 observations
Abert's Squirrel
Sciurus aberti
137 observations
American Black Bear
Ursus americanus
131 observations
Muskrat
Ondatra zibethicus
117 observations
Uinta Chipmunk
Neotamias umbrinus
116 observations
Pacific Marten
Martes caurina
98 observations
Red Fox
Vulpes vulpes
94 observations
Colorado Chipmunk
Neotamias quadrivittatus
81 observations
Long-tailed Weasel
Neogale frenata
81 observations · iNaturalist
American Mink
Neogale vison
32 observations
Bobcat
Lynx rufus
30 observations
North American River Otter
Lontra canadensis
20 observations
American Ermine
Mustela richardsonii
20 observations
Mountain Goat
Oreamnos americanus
19 observations
American Beaver
Castor canadensis
19 observations
Northern Pocket Gopher
Thomomys talpoides
15 observations
Pronghorn
Antilocapra americana
13 observations
Mountain Lion
Puma concolor
9 observations
Little Brown Bat
Myotis lucifugus
7 observations
American Badger
Taxidea taxus
7 observations
Eastern Fox Squirrel
Sciurus niger
5 observations
Rock Squirrel
Otospermophilus variegatus
4 observations
Western Deer Mouse
Peromyscus sonoriensis
4 observations
Western Meadow Vole
Microtus drummondii
4 observations
North American Porcupine
Erethizon dorsatum
3 observations
Bushy-tailed Woodrat
Neotoma cinerea
3 observations
Black-tailed Prairie Dog
Cynomys ludovicianus
3 observations
Long-eared Myotis
Myotis evotis
2 observations
Common Raccoon
Procyon lotor
2 observations
Striped Skunk
Mephitis mephitis
2 observations
Desert Cottontail
Sylvilagus audubonii
2 observations
Western Spotted Skunk
Spilogale gracilis
2 observations
Thirteen-lined Ground Squirrel
Ictidomys tridecemlineatus
2 observations
Southern Red-backed Vole
Clethrionomys gapperi
2 observations · iNaturalist
Big Brown Bat
Eptesicus fuscus
1 observation
Northern Hoary Bat
Lasiurus cinereus
1 observation
Silver-haired Bat
Lasionycteris noctivagans
1 observation

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.

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