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Mule Deer
Odocoileus hemionus
15,398 observations
Elk
Cervus canadensis
7,949 observations
Common Golden-mantled Ground Squirrel
Callospermophilus lateralis
6,315 observations
Eastern Fox Squirrel
Sciurus niger
6,137 observations
Black-tailed Prairie Dog
Cynomys ludovicianus
6,094 observations
Yellow-bellied Marmot
Marmota flaviventris
5,533 observations
Moose
Alces alces
5,166 observations
Bighorn Sheep
Ovis canadensis
4,194 observations
American Pika
Ochotona princeps
2,965 observations
Pronghorn
Antilocapra americana
2,684 observations
Coyote
Canis latrans
2,673 observations
Red Fox
Vulpes vulpes
2,387 observations
White-tailed Deer
Odocoileus virginianus
2,048 observations
American Black Bear
Ursus americanus
1,759 observations
Common Raccoon
Procyon lotor
1,516 observations
American Beaver
Castor canadensis
1,465 observations
Invasive
Mountain Goat
Oreamnos americanus
1,365 observations
Muskrat
Ondatra zibethicus
1,284 observations
Fremont's Squirrel
Tamiasciurus fremonti
1,218 observations
Wyoming Ground Squirrel
Urocitellus elegans
1,168 observations
Abert's Squirrel
Sciurus aberti
938 observations
Desert Cottontail
Sylvilagus audubonii
924 observations
Least Chipmunk
Neotamias minimus
818 observations
Bobcat
Lynx rufus
787 observations
Rock Squirrel
Otospermophilus variegatus
737 observations
Mountain Cottontail
Sylvilagus nuttallii
729 observations
North American Porcupine
Erethizon dorsatum
476 observations
Snowshoe Hare
Lepus americanus
473 observations
Gunnison's Prairie Dog
Cynomys gunnisoni
392 observations
White-tailed Prairie Dog
Cynomys leucurus
385 observations
Long-tailed Weasel
Neogale frenata
376 observations
Mountain Lion
Puma concolor
346 observations
Striped Skunk
Mephitis mephitis
339 observations
Pacific Marten
Martes caurina
337 observations
Black-tailed Jackrabbit
Lepus californicus
325 observations
American Mink
Neogale vison
318 observations
American Red Squirrel
Tamiasciurus hudsonicus
291 observations
American Badger
Taxidea taxus
279 observations
American Bison
Bison bison
277 observations
Thirteen-lined Ground Squirrel
Ictidomys tridecemlineatus
230 observations
Domestic Horse
Equus caballus
223 observations
Colorado Chipmunk
Neotamias quadrivittatus
213 observations
Eastern Cottontail
Sylvilagus floridanus
211 observations
Domestic Cat
Felis catus
161 observations
Swift Fox
Vulpes velox
158 observations
Gray Fox
Urocyon cinereoargenteus
152 observations
White-tailed Jackrabbit
Lepus townsendii
146 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 15,398 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)