Mammals of Wyoming
The mammals most often spotted in Wyoming, ranked by recent research-grade observations.
59,439
recent observations
50
species listed
50
mammals
Naturalists have logged 59,439 research-grade observations across the 50 most-recorded species in Wyoming. The most frequently seen is the American Bison, with 11,352 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
11,352 observations · iNaturalist
Wapiti
Cervus canadensis
6,819 observations
Pronghorn
Antilocapra americana
4,904 observations
Moose
Alces alces
4,620 observations
Mule Deer
Odocoileus hemionus
3,608 observations
American Black Bear
Ursus americanus
3,371 observations
Uinta Ground Squirrel
Urocitellus armatus
2,615 observations
Yellow-bellied Marmot
Marmota flaviventris
2,614 observations
Brown Bear
Ursus arctos
2,472 observations
Coyote
Canis latrans
2,076 observations
Common Golden-mantled Ground Squirrel
Callospermophilus lateralis
1,751 observations
American Red Squirrel
Tamiasciurus hudsonicus
1,714 observations
Bighorn Sheep
Ovis canadensis
1,416 observations
Gray Wolf
Canis lupus
1,242 observations
Red Fox
Vulpes vulpes
1,069 observations
American Pika
Ochotona princeps
1,042 observations
Black-tailed Prairie Dog
Cynomys ludovicianus
672 observations
Least Chipmunk
Neotamias minimus
580 observations
American Beaver
Castor canadensis
470 observations
Mountain Goat
Oreamnos americanus
457 observations
American Badger
Taxidea taxus
443 observations
White-tailed Prairie Dog
Cynomys leucurus
441 observations
White-tailed Deer
Odocoileus virginianus
397 observations
Muskrat
Ondatra zibethicus
309 observations
Eastern Fox Squirrel
Sciurus niger
275 observations
Wyoming Ground Squirrel
Urocitellus elegans
260 observations
Snowshoe Hare
Lepus americanus
237 observations
Yellow-pine Chipmunk
Neotamias amoenus
205 observations
North American River Otter
Lontra canadensis
190 observations
Mountain Cottontail
Sylvilagus nuttallii
184 observations
White-tailed Jackrabbit
Lepus townsendii
181 observations
Pacific Marten
Martes caurina
164 observations
North American Porcupine
Erethizon dorsatum
154 observations
Long-tailed Weasel
Neogale frenata
139 observations · iNaturalist
Domestic Horse
Equus caballus
130 observations · iNaturalist
Swift Fox
Vulpes velox
94 observations
Common Raccoon
Procyon lotor
93 observations
Desert Cottontail
Sylvilagus audubonii
82 observations
Mountain Lion
Puma concolor
73 observations
Striped Skunk
Mephitis mephitis
72 observations
Uinta Chipmunk
Neotamias umbrinus
67 observations
American Mink
Neogale vison
67 observations
Thirteen-lined Ground Squirrel
Ictidomys tridecemlineatus
63 observations
Northern Pocket Gopher
Thomomys talpoides
54 observations
Western Deer Mouse
Peromyscus sonoriensis
49 observations
Bobcat
Lynx rufus
35 observations
Domestic Cattle
Bos taurus
32 observations · iNaturalist
Bushy-tailed Woodrat
Neotoma cinerea
31 observations
Eastern Gray Squirrel
Sciurus carolinensis
31 observations
American Ermine
Mustela richardsonii
23 observations
Mammals in nearby places
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