Mammals of Washington
The mammals most often spotted in Washington, ranked by recent research-grade observations.
Most-observed mammals in Washington
Mule Deer
Odocoileus hemionus
23,832 observations
Eastern Gray Squirrel
Sciurus carolinensis
12,458 observations
Eastern Cottontail
Sylvilagus floridanus
9,409 observations
Harbor Seal
Phoca vitulina
8,979 observations
Douglas's Squirrel
Tamiasciurus douglasii
6,313 observations
Common Raccoon
Procyon lotor
5,524 observations
Elk
Cervus canadensis
4,957 observations
North American River Otter
Lontra canadensis
4,626 observations
American Beaver
Castor canadensis
3,832 observations
Coyote
Canis latrans
3,114 observations
Orca
Orcinus orca
2,830 observations
Hoary Marmot
Marmota caligata
2,808 observations
American Black Bear
Ursus americanus
2,419 observations
Cascade Golden-mantled Ground Squirrel
Callospermophilus saturatus
2,417 observations · iNaturalist
California Sea Lion
Zalophus californianus
2,213 observations
Townsend's Chipmunk
Neotamias townsendii
2,201 observations
American Pika
Ochotona princeps
2,147 observations
Steller Sea Lion
Eumetopias jubatus
1,883 observations
Yellow-bellied Marmot
Marmota flaviventris
1,683 observations
Coypu
Myocastor coypus
1,651 observations
White-tailed Deer
Odocoileus virginianus
1,519 observations
Humpback Whale
Megaptera novaeangliae
1,508 observations
Mountain Goat
Oreamnos americanus
1,362 observations
Douglas's Ground Squirrel
Otospermophilus douglasii
1,354 observations · iNaturalist
American Red Squirrel
Tamiasciurus hudsonicus
1,303 observations
Eastern Fox Squirrel
Sciurus niger
1,299 observations
Yellow-pine Chipmunk
Neotamias amoenus
1,144 observations
Domestic Cat
Felis catus
1,085 observations
Muskrat
Ondatra zibethicus
1,026 observations
Virginia Opossum
Didelphis virginiana
955 observations
Red Fox
Vulpes vulpes
948 observations
Olympic Marmot
Marmota olympus
851 observations
European Rabbit
Oryctolagus cuniculus
844 observations · iNaturalist
American Mink
Neogale vison
830 observations
Moose
Alces alces
825 observations
Snowshoe Hare
Lepus americanus
757 observations
Bighorn Sheep
Ovis canadensis
656 observations
Harbour Porpoise
Phocoena phocoena
654 observations
Western Deer Mouse
Peromyscus sonoriensis
631 observations · iNaturalist
Bobcat
Lynx rufus
630 observations
Brown Rat
Rattus norvegicus
595 observations
Grey Whale
Eschrichtius robustus
544 observations
Sea Otter
Enhydra lutris
492 observations
North American Porcupine
Erethizon dorsatum
483 observations
Mountain Lion
Puma concolor
466 observations
Northern Elephant Seal
Mirounga angustirostris
454 observations
Striped Skunk
Mephitis mephitis
440 observations
American Shrewmole
Neurotrichus gibbsii
438 observations
Long-tailed Weasel
Neogale frenata
395 observations · iNaturalist
Columbian Ground Squirrel
Urocitellus columbianus
334 observations