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Mule Deer
Odocoileus hemionus
16,949 observations
Wapiti
Cervus canadensis
8,736 observations
Common Golden-mantled Ground Squirrel
Callospermophilus lateralis
7,342 observations
Black-tailed Prairie Dog
Cynomys ludovicianus
6,653 observations
Eastern Fox Squirrel
Sciurus niger
6,588 observations
Yellow-bellied Marmot
Marmota flaviventris
6,425 observations
Moose
Alces alces
5,936 observations
Bighorn Sheep
Ovis canadensis
4,573 observations
American Pika
Ochotona princeps
3,488 observations
Pronghorn
Antilocapra americana
2,902 observations
Coyote
Canis latrans
2,899 observations
Red Fox
Vulpes vulpes
2,586 observations
White-tailed Deer
Odocoileus virginianus
2,156 observations
American Black Bear
Ursus americanus
2,074 observations
Common Raccoon
Procyon lotor
1,671 observations
American Beaver
Castor canadensis
1,644 observations
Invasive
Mountain Goat
Oreamnos americanus
1,568 observations
Muskrat
Ondatra zibethicus
1,334 observations
Fremont's Squirrel
Tamiasciurus fremonti
1,309 observations
Wyoming Ground Squirrel
Urocitellus elegans
1,239 observations
Abert's Squirrel
Sciurus aberti
1,020 observations
American Bison
Bos bison
1,012 observations
Least Chipmunk
Neotamias minimus
982 observations
Desert Cottontail
Sylvilagus audubonii
938 observations
Mountain Cottontail
Sylvilagus nuttallii
837 observations
Bobcat
Lynx rufus
836 observations
Rock Squirrel
Otospermophilus variegatus
799 observations
Snowshoe Hare
Lepus americanus
515 observations
Gunnison's Prairie Dog
Cynomys gunnisoni
511 observations
North American Porcupine
Erethizon dorsatum
500 observations
Long-tailed Weasel
Neogale frenata
436 observations
White-tailed Prairie Dog
Cynomys leucurus
432 observations
Striped Skunk
Mephitis mephitis
397 observations
Black-tailed Jackrabbit
Lepus californicus
385 observations
American Mink
Neogale vison
375 observations
Pacific Marten
Martes caurina
368 observations
Mountain Lion
Puma concolor
363 observations
Colorado Chipmunk
Neotamias quadrivittatus
347 observations
American Badger
Taxidea taxus
312 observations
American Red Squirrel
Tamiasciurus hudsonicus
311 observations
Thirteen-lined Ground Squirrel
Ictidomys tridecemlineatus
261 observations
Domestic Horse
Equus caballus
235 observations
Eastern Cottontail
Sylvilagus floridanus
216 observations
Domestic Cat
Felis catus
183 observations
Swift Fox
Vulpes velox
171 observations
Gray Fox
Urocyon cinereoargenteus
164 observations
White-tailed Jackrabbit
Lepus townsendii
156 observations
Uinta Chipmunk
Neotamias umbrinus
125 observations
North American River Otter
Lontra canadensis
112 observations
Western Deer Mouse
Peromyscus sonoriensis
111 observations
Frequently Asked Questions
- The 10 most common mammals in Colorado are:
- Mule Deer (Odocoileus hemionus)
- Wapiti (Cervus canadensis)
- Common Golden-mantled Ground Squirrel (Callospermophilus lateralis)
- Black-tailed Prairie Dog (Cynomys ludovicianus)
- Eastern Fox Squirrel (Sciurus niger)
- Yellow-bellied Marmot (Marmota flaviventris)
- Moose (Alces alces)
- Bighorn Sheep (Ovis canadensis)
- American Pika (Ochotona princeps)
- Pronghorn (Antilocapra americana)
- The most observed mammal in Colorado is Mule Deer (Odocoileus hemionus), with 16,949 recorded observations.
- Some of the most commonly observed invasive mammals in Colorado include:
- Mountain Goat (Oreamnos americanus)