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Mule Deer
Odocoileus hemionus
14,915 observations
Wapiti
Cervus canadensis
7,602 observations
Common Golden-mantled Ground Squirrel
Callospermophilus lateralis
6,112 observations
Eastern Fox Squirrel
Sciurus niger
5,863 observations
Black-tailed Prairie Dog
Cynomys ludovicianus
5,748 observations
Yellow-bellied Marmot
Marmota flaviventris
5,320 observations
Moose
Alces alces
4,933 observations
Bighorn Sheep
Ovis canadensis
4,055 observations
American Pika
Ochotona princeps
2,920 observations
Coyote
Canis latrans
2,567 observations
Pronghorn
Antilocapra americana
2,538 observations
Red Fox
Vulpes vulpes
2,290 observations
White-tailed Deer
Odocoileus virginianus
1,985 observations
American Black Bear
Ursus americanus
1,667 observations
Common Raccoon
Procyon lotor
1,452 observations
American Beaver
Castor canadensis
1,382 observations
Invasive
Mountain Goat
Oreamnos americanus
1,308 observations
Muskrat
Ondatra zibethicus
1,232 observations
Fremont's Squirrel
Tamiasciurus fremonti
1,197 observations
Wyoming Ground Squirrel
Urocitellus elegans
1,137 observations
Desert Cottontail
Sylvilagus audubonii
914 observations
Abert's Squirrel
Sciurus aberti
911 observations
Least Chipmunk
Neotamias minimus
805 observations
Bobcat
Lynx rufus
769 observations
Rock Squirrel
Otospermophilus variegatus
722 observations
Mountain Cottontail
Sylvilagus nuttallii
695 observations
Snowshoe Hare
Lepus americanus
460 observations
North American Porcupine
Erethizon dorsatum
455 observations
Long-tailed Weasel
Neogale frenata
368 observations
Gunnison's Prairie Dog
Cynomys gunnisoni
361 observations
White-tailed Prairie Dog
Cynomys leucurus
348 observations
Mountain Lion
Puma concolor
329 observations
Pacific Marten
Martes caurina
328 observations
Striped Skunk
Mephitis mephitis
319 observations
American Mink
Neogale vison
311 observations
Black-tailed Jackrabbit
Lepus californicus
307 observations
American Red Squirrel
Tamiasciurus hudsonicus
287 observations
American Bison
Bison bison
275 observations
American Badger
Taxidea taxus
260 observations
Thirteen-lined Ground Squirrel
Ictidomys tridecemlineatus
226 observations
Domestic Horse
Equus caballus
217 observations
Eastern Cottontail
Sylvilagus floridanus
205 observations
Colorado Chipmunk
Neotamias quadrivittatus
203 observations
Domestic Cat
Felis catus
156 observations
Swift Fox
Vulpes velox
155 observations
Gray Fox
Urocyon cinereoargenteus
149 observations
White-tailed Jackrabbit
Lepus townsendii
141 observations
Western Deer Mouse
Peromyscus sonoriensis
106 observations
House Mouse
Mus musculus
92 observations
American Ermine
Mustela richardsonii
87 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)
- 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)
- Coyote (Canis latrans)
- The most observed mammal in Colorado is Mule Deer (Odocoileus hemionus), with 14,915 recorded observations.
- Some of the most commonly observed invasive mammals in Colorado include:
- Mountain Goat (Oreamnos americanus)