Mammals of Denver, Colorado
The mammals most often spotted near Denver, ranked by recent research-grade observations.
Most-observed mammals near Denver
Mule Deer
Odocoileus hemionus
4,213 observations
Black-tailed Prairie Dog
Cynomys ludovicianus
3,647 observations
Eastern Fox Squirrel
Sciurus niger
3,224 observations
Coyote
Canis latrans
1,322 observations
White-tailed Deer
Odocoileus virginianus
994 observations
Elk
Cervus canadensis
881 observations
Common Raccoon
Procyon lotor
650 observations
Red Fox
Vulpes vulpes
633 observations
Muskrat
Ondatra zibethicus
633 observations
Pronghorn
Antilocapra americana
452 observations
American Beaver
Castor canadensis
436 observations
Desert Cottontail
Sylvilagus audubonii
413 observations
Bighorn Sheep
Ovis canadensis
345 observations
Abert's Squirrel
Sciurus aberti
311 observations
American Black Bear
Ursus americanus
297 observations
Bobcat
Lynx rufus
260 observations
Common Golden-mantled Ground Squirrel
Callospermophilus lateralis
234 observations
Mountain Cottontail
Sylvilagus nuttallii
197 observations
American Bison
Bison bison
143 observations
Fremont's Squirrel
Tamiasciurus fremonti
132 observations · iNaturalist
Moose
Alces alces
112 observations
Eastern Cottontail
Sylvilagus floridanus
100 observations
American Mink
Neogale vison
93 observations
Striped Skunk
Mephitis mephitis
88 observations
Mountain Lion
Puma concolor
76 observations
Rock Squirrel
Otospermophilus variegatus
66 observations
House Mouse
Mus musculus
61 observations
Yellow-bellied Marmot
Marmota flaviventris
58 observations
Least Chipmunk
Neotamias minimus
55 observations
Domestic Cat
Felis catus
53 observations
American Badger
Taxidea taxus
35 observations
Brown Rat
Rattus norvegicus
35 observations
North American Porcupine
Erethizon dorsatum
34 observations
Big Brown Bat
Eptesicus fuscus
31 observations
Western Deer Mouse
Peromyscus sonoriensis
31 observations · iNaturalist
Colorado Chipmunk
Neotamias quadrivittatus
26 observations
Western Meadow Vole
Microtus drummondii
26 observations · iNaturalist
Black-footed Ferret
Mustela nigripes
24 observations
Gray Fox
Urocyon cinereoargenteus
22 observations
Ringtail
Bassariscus astutus
17 observations
Thirteen-lined Ground Squirrel
Ictidomys tridecemlineatus
17 observations
Long-tailed Weasel
Neogale frenata
15 observations · iNaturalist
American Red Squirrel
Tamiasciurus hudsonicus
14 observations
Northern Hoary Bat
Lasiurus cinereus
12 observations
Little Brown Bat
Myotis lucifugus
8 observations
European Rabbit
Oryctolagus cuniculus
8 observations · iNaturalist
Western Spotted Skunk
Spilogale gracilis
8 observations
Black-tailed Jackrabbit
Lepus californicus
7 observations
Silver-haired Bat
Lasionycteris noctivagans
6 observations
Western Harvest Mouse
Reithrodontomys megalotis
6 observations