Mammals of Washington
The mammals most often spotted in Washington, ranked by recent research-grade observations.
136,708
recent observations
50
species listed
50
mammals
Naturalists have logged 136,708 research-grade observations across the 50 most-recorded species in Washington. The most frequently seen is the Mule Deer, with 25,113 recorded sightings.
Rarer finds confirmed in Washington include Olympic Marmot and Bobcat - uncommon enough that a sighting is worth logging.
Most-observed mammals in Washington
Mule Deer
Odocoileus hemionus
25,113 observations
Eastern Gray Squirrel
Sciurus carolinensis
12,748 observations
Eastern Cottontail
Sylvilagus floridanus
9,835 observations
Harbor Seal
Phoca vitulina
9,421 observations
Douglas's Squirrel
Tamiasciurus douglasii
6,627 observations
Common Raccoon
Procyon lotor
5,715 observations
Wapiti
Cervus canadensis
5,209 observations
North American River Otter
Lontra canadensis
4,774 observations
American Beaver
Castor canadensis
4,070 observations
Coyote
Canis latrans
3,231 observations
Hoary Marmot
Marmota caligata
3,120 observations
Orca
Orcinus orca
2,971 observations
Cascade Golden-mantled Ground Squirrel
Callospermophilus saturatus
2,713 observations · iNaturalist
American Black Bear
Ursus americanus
2,648 observations
Townsend's Chipmunk
Neotamias townsendii
2,428 observations
American Pika
Ochotona princeps
2,300 observations
California Sea Lion
Zalophus californianus
2,246 observations
Steller Sea Lion
Eumetopias jubatus
1,961 observations
Yellow-bellied Marmot
Marmota flaviventris
1,756 observations
Coypu
Myocastor coypus
1,680 observations
Humpback Whale
Megaptera novaeangliae
1,590 observations
White-tailed Deer
Odocoileus virginianus
1,554 observations
Mountain Goat
Oreamnos americanus
1,479 observations
Douglas's Ground Squirrel
Otospermophilus douglasii
1,469 observations · iNaturalist
American Red Squirrel
Tamiasciurus hudsonicus
1,353 observations
Eastern Fox Squirrel
Sciurus niger
1,313 observations
Yellow-pine Chipmunk
Neotamias amoenus
1,289 observations
Domestic Cat
Felis catus
1,099 observations
Muskrat
Ondatra zibethicus
1,062 observations
Red Fox
Vulpes vulpes
988 observations
Virginia Opossum
Didelphis virginiana
970 observations
Olympic Marmot
Marmota olympus
929 observations
European Rabbit
Oryctolagus cuniculus
894 observations · iNaturalist
American Mink
Neogale vison
870 observations
Moose
Alces alces
860 observations
Snowshoe Hare
Lepus americanus
818 observations
Bighorn Sheep
Ovis canadensis
692 observations
Western Deer Mouse
Peromyscus sonoriensis
682 observations · iNaturalist
Harbour Porpoise
Phocoena phocoena
677 observations
Bobcat
Lynx rufus
665 observations
Brown Rat
Rattus norvegicus
624 observations
Grey Whale
Eschrichtius robustus
586 observations
Sea Otter
Enhydra lutris
521 observations
North American Porcupine
Erethizon dorsatum
499 observations
Mountain Lion
Puma concolor
478 observations
Striped Skunk
Mephitis mephitis
465 observations
American Shrewmole
Neurotrichus gibbsii
461 observations
Northern Elephant Seal
Mirounga angustirostris
459 observations
Long-tailed Weasel
Neogale frenata
425 observations · iNaturalist
Columbian Ground Squirrel
Urocitellus columbianus
371 observations
Mammals in nearby places
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