Mammals of Portland, Oregon
The mammals most often spotted near Portland, ranked by recent research-grade observations.
Most-observed mammals near Portland
Coypu
Myocastor coypus
2,278 observations
Eastern Gray Squirrel
Sciurus carolinensis
2,274 observations
Mule Deer
Odocoileus hemionus
1,804 observations
Eastern Fox Squirrel
Sciurus niger
1,129 observations
American Beaver
Castor canadensis
805 observations
Common Raccoon
Procyon lotor
783 observations
Coyote
Canis latrans
748 observations
Douglas's Squirrel
Tamiasciurus douglasii
706 observations
Douglas's Ground Squirrel
Otospermophilus douglasii
664 observations · iNaturalist
Townsend's Chipmunk
Neotamias townsendii
509 observations
Eastern Cottontail
Sylvilagus floridanus
480 observations
Brush Rabbit
Sylvilagus bachmani
390 observations
Muskrat
Ondatra zibethicus
278 observations
Striped Skunk
Mephitis mephitis
263 observations
North American River Otter
Lontra canadensis
224 observations
Virginia Opossum
Didelphis virginiana
219 observations
White-tailed Deer
Odocoileus virginianus
184 observations
Domestic Cat
Felis catus
170 observations
Western Deer Mouse
Peromyscus sonoriensis
160 observations · iNaturalist
Brown Rat
Rattus norvegicus
114 observations
American Shrewmole
Neurotrichus gibbsii
106 observations
American Mink
Neogale vison
94 observations
Camas Pocket Gopher
Megascapheus bulbivorus
85 observations · iNaturalist
Black Rat
Rattus rattus
79 observations
Elk
Cervus canadensis
62 observations
Long-tailed Weasel
Neogale frenata
58 observations · iNaturalist
California Sea Lion
Zalophus californianus
52 observations
Bobcat
Lynx rufus
46 observations
Steller Sea Lion
Eumetopias jubatus
39 observations
European Rabbit
Oryctolagus cuniculus
38 observations · iNaturalist
Townsend's Mole
Scapanus townsendii
30 observations
American Black Bear
Ursus americanus
29 observations
Western Gray Squirrel
Sciurus griseus
28 observations
Coast Mole
Scapanus orarius
19 observations
Little Brown Bat
Myotis lucifugus
18 observations
Vagrant Shrew
Sorex vagrans
13 observations
Trowbridge's Shrew
Sorex trowbridgii
13 observations
Mountain Beaver
Aplodontia rufa
12 observations
North American Porcupine
Erethizon dorsatum
12 observations
Townsend's Vole
Microtus townsendii
12 observations · iNaturalist
American Ermine
Mustela richardsonii
12 observations · iNaturalist
American Pika
Ochotona princeps
10 observations
House Mouse
Mus musculus
9 observations
Central Pacific Jumping Mouse
Zapus montanus
9 observations · iNaturalist
Snowshoe Hare
Lepus americanus
8 observations
Yellow-bellied Marmot
Marmota flaviventris
8 observations
Big Brown Bat
Eptesicus fuscus
7 observations
Mountain Lion
Puma concolor
7 observations
Silver-haired Bat
Lasionycteris noctivagans
5 observations
Harbor Seal
Phoca vitulina
5 observations