Mammals of Denver, Colorado
The mammals most often spotted near Denver, ranked by recent research-grade observations.
22,532
recent observations
50
species listed
50
mammals
Naturalists have logged 22,532 research-grade observations across the 50 most-recorded species near Denver. The most frequently seen is the Mule Deer, with 4,437 recorded sightings.
Rarer finds confirmed near Denver include Bobcat and Black-footed Ferret - uncommon enough that a sighting is worth logging.
Most-observed mammals near Denver
Mule Deer
Odocoileus hemionus
4,437 observations
Black-tailed Prairie Dog
Cynomys ludovicianus
3,929 observations
Eastern Fox Squirrel
Sciurus niger
3,399 observations
Coyote
Canis latrans
1,396 observations
White-tailed Deer
Odocoileus virginianus
1,034 observations
Wapiti
Cervus canadensis
930 observations
American Bison
Bos bison
863 observations · iNaturalist
Common Raccoon
Procyon lotor
699 observations
Red Fox
Vulpes vulpes
660 observations
Muskrat
Ondatra zibethicus
647 observations
Pronghorn
Antilocapra americana
477 observations
American Beaver
Castor canadensis
471 observations
Desert Cottontail
Sylvilagus audubonii
416 observations
Bighorn Sheep
Ovis canadensis
363 observations
American Black Bear
Ursus americanus
339 observations
Abert's Squirrel
Sciurus aberti
330 observations
Bobcat
Lynx rufus
275 observations
Common Golden-mantled Ground Squirrel
Callospermophilus lateralis
272 observations
Mountain Cottontail
Sylvilagus nuttallii
231 observations
Fremont's Squirrel
Tamiasciurus fremonti
140 observations
Moose
Alces alces
122 observations
American Mink
Neogale vison
108 observations
Eastern Cottontail
Sylvilagus floridanus
100 observations
Striped Skunk
Mephitis mephitis
93 observations
Mountain Lion
Puma concolor
78 observations
Rock Squirrel
Otospermophilus variegatus
74 observations
House Mouse
Mus musculus
64 observations
Yellow-bellied Marmot
Marmota flaviventris
62 observations
Domestic Cat
Felis catus
58 observations
Least Chipmunk
Neotamias minimus
57 observations
Colorado Chipmunk
Neotamias quadrivittatus
38 observations
American Badger
Taxidea taxus
36 observations
Big Brown Bat
Eptesicus fuscus
35 observations
North American Porcupine
Erethizon dorsatum
35 observations
Brown Rat
Rattus norvegicus
35 observations
Western Deer Mouse
Peromyscus sonoriensis
31 observations
Western Meadow Vole
Microtus drummondii
27 observations
Black-footed Ferret
Mustela nigripes
24 observations
Gray Fox
Urocyon cinereoargenteus
22 observations
Ringtail
Bassariscus astutus
18 observations
Long-tailed Weasel
Neogale frenata
18 observations · iNaturalist
Thirteen-lined Ground Squirrel
Ictidomys tridecemlineatus
17 observations
American Red Squirrel
Tamiasciurus hudsonicus
15 observations
Northern Hoary Bat
Lasiurus cinereus
12 observations
Little Brown Bat
Myotis lucifugus
8 observations
Black-tailed Jackrabbit
Lepus californicus
8 observations
European Rabbit
Oryctolagus cuniculus
8 observations · iNaturalist
Western Spotted Skunk
Spilogale gracilis
8 observations
Western Harvest Mouse
Reithrodontomys megalotis
7 observations
Silver-haired Bat
Lasionycteris noctivagans
6 observations
Mammals in nearby places
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