Mammals of Washington
The mammals most often spotted in Washington, ranked by recent research-grade observations.
139,055
recent observations
50
species listed
50
mammals
Naturalists have logged 139,055 research-grade observations across the 50 most-recorded species in Washington. The most frequently seen is the Mule Deer, with 25,514 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
25,514 observations
Eastern Gray Squirrel
Sciurus carolinensis
12,867 observations
Eastern Cottontail
Sylvilagus floridanus
9,946 observations
Harbor Seal
Phoca vitulina
9,597 observations
Douglas's Squirrel
Tamiasciurus douglasii
6,764 observations
Common Raccoon
Procyon lotor
5,765 observations
Wapiti
Cervus canadensis
5,305 observations
North American River Otter
Lontra canadensis
4,846 observations
American Beaver
Castor canadensis
4,139 observations
Coyote
Canis latrans
3,268 observations
Hoary Marmot
Marmota caligata
3,239 observations
Orca
Orcinus orca
3,037 observations
Cascade Golden-mantled Ground Squirrel
Callospermophilus saturatus
2,806 observations
American Black Bear
Ursus americanus
2,743 observations
Townsend's Chipmunk
Neotamias townsendii
2,538 observations
American Pika
Ochotona princeps
2,380 observations
California Sea Lion
Zalophus californianus
2,269 observations
Steller Sea Lion
Eumetopias jubatus
1,982 observations
Yellow-bellied Marmot
Marmota flaviventris
1,761 observations
Coypu
Myocastor coypus
1,698 observations
Humpback Whale
Megaptera novaeangliae
1,611 observations
White-tailed Deer
Odocoileus virginianus
1,566 observations
Mountain Goat
Oreamnos americanus
1,533 observations
Douglas's Ground Squirrel
Otospermophilus douglasii
1,496 observations
American Red Squirrel
Tamiasciurus hudsonicus
1,380 observations
Yellow-pine Chipmunk
Neotamias amoenus
1,363 observations
Eastern Fox Squirrel
Sciurus niger
1,323 observations
Domestic Cat
Felis catus
1,109 observations
Muskrat
Ondatra zibethicus
1,077 observations
Red Fox
Vulpes vulpes
1,001 observations
Virginia Opossum
Didelphis virginiana
973 observations
Olympic Marmot
Marmota olympus
949 observations
European Rabbit
Oryctolagus cuniculus
906 observations · iNaturalist
American Mink
Neogale vison
884 observations
Moose
Alces alces
867 observations
Snowshoe Hare
Lepus americanus
846 observations
Bighorn Sheep
Ovis canadensis
697 observations
Western Deer Mouse
Peromyscus sonoriensis
692 observations
Harbour Porpoise
Phocoena phocoena
684 observations
Bobcat
Lynx rufus
673 observations
Brown Rat
Rattus norvegicus
629 observations
Grey Whale
Eschrichtius robustus
613 observations
Sea Otter
Enhydra lutris
534 observations
North American Porcupine
Erethizon dorsatum
506 observations
Mountain Lion
Puma concolor
481 observations
Striped Skunk
Mephitis mephitis
465 observations
American Shrewmole
Neurotrichus gibbsii
465 observations
Northern Elephant Seal
Mirounga angustirostris
464 observations
Long-tailed Weasel
Neogale frenata
431 observations · iNaturalist
Columbian Ground Squirrel
Urocitellus columbianus
373 observations
Mammals in nearby places
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