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Mule Deer
Odocoileus hemionus
15,558 observations
Elk
Cervus canadensis
8,034 observations
Common Golden-mantled Ground Squirrel
Callospermophilus lateralis
6,380 observations
Eastern Fox Squirrel
Sciurus niger
6,173 observations
Black-tailed Prairie Dog
Cynomys ludovicianus
6,129 observations
Yellow-bellied Marmot
Marmota flaviventris
5,608 observations
Moose
Alces alces
5,243 observations
Bighorn Sheep
Ovis canadensis
4,229 observations
American Pika
Ochotona princeps
2,986 observations
Pronghorn
Antilocapra americana
2,715 observations
Coyote
Canis latrans
2,703 observations
Red Fox
Vulpes vulpes
2,405 observations
White-tailed Deer
Odocoileus virginianus
2,062 observations
American Black Bear
Ursus americanus
1,784 observations
Common Raccoon
Procyon lotor
1,535 observations
American Beaver
Castor canadensis
1,477 observations
Invasive
Mountain Goat
Oreamnos americanus
1,380 observations
Muskrat
Ondatra zibethicus
1,286 observations
Fremont's Squirrel
Tamiasciurus fremonti
1,218 observations
Wyoming Ground Squirrel
Urocitellus elegans
1,177 observations
Abert's Squirrel
Sciurus aberti
947 observations
Desert Cottontail
Sylvilagus audubonii
925 observations
Least Chipmunk
Neotamias minimus
823 observations
Bobcat
Lynx rufus
792 observations
Rock Squirrel
Otospermophilus variegatus
740 observations
Mountain Cottontail
Sylvilagus nuttallii
736 observations
North American Porcupine
Erethizon dorsatum
477 observations
Snowshoe Hare
Lepus americanus
474 observations
White-tailed Prairie Dog
Cynomys leucurus
400 observations
Gunnison's Prairie Dog
Cynomys gunnisoni
395 observations
Long-tailed Weasel
Neogale frenata
379 observations
Mountain Lion
Puma concolor
347 observations
Striped Skunk
Mephitis mephitis
343 observations
Pacific Marten
Martes caurina
338 observations
Black-tailed Jackrabbit
Lepus californicus
326 observations
American Mink
Neogale vison
318 observations
American Red Squirrel
Tamiasciurus hudsonicus
292 observations
American Badger
Taxidea taxus
281 observations
American Bison
Bison bison
279 observations
Thirteen-lined Ground Squirrel
Ictidomys tridecemlineatus
233 observations
Domestic Horse
Equus caballus
225 observations
Colorado Chipmunk
Neotamias quadrivittatus
216 observations
Eastern Cottontail
Sylvilagus floridanus
212 observations
Domestic Cat
Felis catus
163 observations
Swift Fox
Vulpes velox
159 observations
Gray Fox
Urocyon cinereoargenteus
155 observations
White-tailed Jackrabbit
Lepus townsendii
147 observations
Western Deer Mouse
Peromyscus sonoriensis
107 observations
North American River Otter
Lontra canadensis
101 observations
House Mouse
Mus musculus
93 observations
Frequently Asked Questions
- The 10 most common mammals in Colorado are:
- Mule Deer (Odocoileus hemionus)
- Elk (Cervus canadensis)
- Common Golden-mantled Ground Squirrel (Callospermophilus lateralis)
- Eastern Fox Squirrel (Sciurus niger)
- Black-tailed Prairie Dog (Cynomys ludovicianus)
- 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 15,558 recorded observations.
- Some of the most commonly observed invasive mammals in Colorado include:
- Mountain Goat (Oreamnos americanus)
- Some of the most commonly observed native mammals in Colorado include:
- Mule Deer (Odocoileus hemionus)
- Bighorn Sheep (Ovis canadensis)
- American Pika (Ochotona princeps)
- Pronghorn (Antilocapra americana)
- Least Chipmunk (Neotamias minimus)