Mammals of Wyoming
The mammals most often spotted in Wyoming, ranked by recent research-grade observations.
Most-observed mammals in Wyoming
American Bison
Bison bison
10,468 observations
Elk
Cervus canadensis
6,339 observations
Pronghorn
Antilocapra americana
4,507 observations
Moose
Alces alces
4,323 observations
Mule Deer
Odocoileus hemionus
3,288 observations
American Black Bear
Ursus americanus
3,083 observations
Brown Bear
Ursus arctos
2,320 observations
Yellow-bellied Marmot
Marmota flaviventris
2,316 observations
Uinta Ground Squirrel
Urocitellus armatus
2,235 observations · iNaturalist
Coyote
Canis latrans
1,984 observations
Common Golden-mantled Ground Squirrel
Callospermophilus lateralis
1,516 observations
American Red Squirrel
Tamiasciurus hudsonicus
1,475 observations
Bighorn Sheep
Ovis canadensis
1,366 observations
Gray Wolf
Canis lupus
1,198 observations
Red Fox
Vulpes vulpes
997 observations
American Pika
Ochotona princeps
908 observations
Black-tailed Prairie Dog
Cynomys ludovicianus
603 observations
Least Chipmunk
Neotamias minimus
481 observations
American Beaver
Castor canadensis
436 observations
American Badger
Taxidea taxus
406 observations
White-tailed Prairie Dog
Cynomys leucurus
403 observations
Mountain Goat
Oreamnos americanus
396 observations
White-tailed Deer
Odocoileus virginianus
375 observations
Muskrat
Ondatra zibethicus
291 observations
Eastern Fox Squirrel
Sciurus niger
261 observations
Wyoming Ground Squirrel
Urocitellus elegans
252 observations
Snowshoe Hare
Lepus americanus
211 observations
Yellow-pine Chipmunk
Neotamias amoenus
195 observations
North American River Otter
Lontra canadensis
179 observations
Mountain Cottontail
Sylvilagus nuttallii
164 observations
White-tailed Jackrabbit
Lepus townsendii
162 observations
Pacific Marten
Martes caurina
152 observations · iNaturalist
North American Porcupine
Erethizon dorsatum
143 observations
Long-tailed Weasel
Neogale frenata
128 observations · iNaturalist
Domestic Horse
Equus caballus
120 observations · iNaturalist
Common Raccoon
Procyon lotor
88 observations
Swift Fox
Vulpes velox
85 observations
Desert Cottontail
Sylvilagus audubonii
81 observations
Mountain Lion
Puma concolor
71 observations
Striped Skunk
Mephitis mephitis
66 observations
American Mink
Neogale vison
62 observations
Thirteen-lined Ground Squirrel
Ictidomys tridecemlineatus
54 observations
Northern Pocket Gopher
Thomomys talpoides
49 observations · iNaturalist
Uinta Chipmunk
Neotamias umbrinus
47 observations · iNaturalist
Western Deer Mouse
Peromyscus sonoriensis
45 observations · iNaturalist
Bobcat
Lynx rufus
35 observations
Domestic Cattle
Bos taurus
30 observations · iNaturalist
Bushy-tailed Woodrat
Neotoma cinerea
29 observations
Eastern Gray Squirrel
Sciurus carolinensis
27 observations
American Ermine
Mustela richardsonii
19 observations · iNaturalist