Mammals of Wyoming
The mammals most often spotted in Wyoming, ranked by recent research-grade observations.
61,016
recent observations
50
species listed
50
mammals
Naturalists have logged 61,016 research-grade observations across the 50 most-recorded species in Wyoming. The most frequently seen is the American Bison, with 11,655 recorded sightings.
Rarer finds confirmed in Wyoming include Grizzly Bear, Gray Wolf and Bobcat - uncommon enough that a sighting is worth logging.
Most-observed mammals in Wyoming
American Bison
Bos bison
11,655 observations · iNaturalist
Wapiti
Cervus canadensis
6,999 observations
Pronghorn
Antilocapra americana
5,058 observations
Moose
Alces alces
4,742 observations
Mule Deer
Odocoileus hemionus
3,738 observations
American Black Bear
Ursus americanus
3,436 observations
Yellow-bellied Marmot
Marmota flaviventris
2,671 observations
Uinta Ground Squirrel
Urocitellus armatus
2,648 observations
Brown Bear
Ursus arctos
2,519 observations
Coyote
Canis latrans
2,134 observations
Common Golden-mantled Ground Squirrel
Callospermophilus lateralis
1,789 observations
American Red Squirrel
Tamiasciurus hudsonicus
1,786 observations
Bighorn Sheep
Ovis canadensis
1,446 observations
Gray Wolf
Canis lupus
1,260 observations
American Pika
Ochotona princeps
1,092 observations
Red Fox
Vulpes vulpes
1,089 observations
Black-tailed Prairie Dog
Cynomys ludovicianus
683 observations
Least Chipmunk
Neotamias minimus
610 observations
American Beaver
Castor canadensis
488 observations
Mountain Goat
Oreamnos americanus
476 observations
White-tailed Prairie Dog
Cynomys leucurus
451 observations
American Badger
Taxidea taxus
447 observations
White-tailed Deer
Odocoileus virginianus
405 observations
Muskrat
Ondatra zibethicus
316 observations
Eastern Fox Squirrel
Sciurus niger
285 observations
Wyoming Ground Squirrel
Urocitellus elegans
264 observations
Snowshoe Hare
Lepus americanus
239 observations
Yellow-pine Chipmunk
Neotamias amoenus
209 observations
Mountain Cottontail
Sylvilagus nuttallii
196 observations
North American River Otter
Lontra canadensis
195 observations
White-tailed Jackrabbit
Lepus townsendii
189 observations
Pacific Marten
Martes caurina
167 observations
North American Porcupine
Erethizon dorsatum
158 observations
Long-tailed Weasel
Neogale frenata
142 observations · iNaturalist
Domestic Horse
Equus caballus
132 observations · iNaturalist
Common Raccoon
Procyon lotor
103 observations
Swift Fox
Vulpes velox
95 observations
Desert Cottontail
Sylvilagus audubonii
82 observations
Uinta Chipmunk
Neotamias umbrinus
77 observations
Mountain Lion
Puma concolor
75 observations
Striped Skunk
Mephitis mephitis
74 observations
American Mink
Neogale vison
68 observations
Thirteen-lined Ground Squirrel
Ictidomys tridecemlineatus
64 observations
Northern Pocket Gopher
Thomomys talpoides
55 observations
Western Deer Mouse
Peromyscus sonoriensis
53 observations
Bobcat
Lynx rufus
35 observations
Domestic Cattle
Bos taurus
35 observations · iNaturalist
Bushy-tailed Woodrat
Neotoma cinerea
31 observations
Eastern Gray Squirrel
Sciurus carolinensis
31 observations
American Ermine
Mustela richardsonii
24 observations
Mammals in nearby places
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