Mammals of Wyoming
The mammals most often spotted in Wyoming, ranked by recent research-grade observations.
58,137
recent observations
50
species listed
50
mammals
Naturalists have logged 58,137 research-grade observations across the 50 most-recorded species in Wyoming. The most frequently seen is the American Bison, with 11,040 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
11,040 observations · iNaturalist
Wapiti
Cervus canadensis
6,704 observations
Pronghorn
Antilocapra americana
4,812 observations
Moose
Alces alces
4,523 observations
Mule Deer
Odocoileus hemionus
3,528 observations
American Black Bear
Ursus americanus
3,301 observations
Uinta Ground Squirrel
Urocitellus armatus
2,576 observations · iNaturalist
Yellow-bellied Marmot
Marmota flaviventris
2,562 observations
Brown Bear
Ursus arctos
2,443 observations
Coyote
Canis latrans
2,053 observations
Common Golden-mantled Ground Squirrel
Callospermophilus lateralis
1,699 observations
American Red Squirrel
Tamiasciurus hudsonicus
1,659 observations
Bighorn Sheep
Ovis canadensis
1,401 observations
Gray Wolf
Canis lupus
1,229 observations
Red Fox
Vulpes vulpes
1,054 observations
American Pika
Ochotona princeps
997 observations
Black-tailed Prairie Dog
Cynomys ludovicianus
655 observations
Least Chipmunk
Neotamias minimus
526 observations
American Beaver
Castor canadensis
453 observations
Mountain Goat
Oreamnos americanus
445 observations
American Badger
Taxidea taxus
435 observations
White-tailed Prairie Dog
Cynomys leucurus
429 observations
White-tailed Deer
Odocoileus virginianus
393 observations
Muskrat
Ondatra zibethicus
305 observations
Eastern Fox Squirrel
Sciurus niger
267 observations
Wyoming Ground Squirrel
Urocitellus elegans
258 observations
Snowshoe Hare
Lepus americanus
231 observations
Yellow-pine Chipmunk
Neotamias amoenus
204 observations
North American River Otter
Lontra canadensis
188 observations
Mountain Cottontail
Sylvilagus nuttallii
177 observations
White-tailed Jackrabbit
Lepus townsendii
172 observations
Pacific Marten
Martes caurina
159 observations · iNaturalist
North American Porcupine
Erethizon dorsatum
148 observations
Long-tailed Weasel
Neogale frenata
135 observations · iNaturalist
Domestic Horse
Equus caballus
129 observations · iNaturalist
Swift Fox
Vulpes velox
94 observations
Common Raccoon
Procyon lotor
91 observations
Desert Cottontail
Sylvilagus audubonii
82 observations
Mountain Lion
Puma concolor
73 observations
Striped Skunk
Mephitis mephitis
71 observations
American Mink
Neogale vison
65 observations
Thirteen-lined Ground Squirrel
Ictidomys tridecemlineatus
62 observations
Uinta Chipmunk
Neotamias umbrinus
60 observations · iNaturalist
Northern Pocket Gopher
Thomomys talpoides
52 observations · iNaturalist
Western Deer Mouse
Peromyscus sonoriensis
48 observations · iNaturalist
Bobcat
Lynx rufus
35 observations
Eastern Gray Squirrel
Sciurus carolinensis
31 observations
Domestic Cattle
Bos taurus
31 observations · iNaturalist
Bushy-tailed Woodrat
Neotoma cinerea
30 observations
American Ermine
Mustela richardsonii
22 observations · iNaturalist
Mammals in nearby places
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