Mammals of Washington
The mammals most often spotted in Washington, ranked by recent research-grade observations.
143,168
recent observations
50
species listed
50
mammals
Naturalists have logged 143,168 research-grade observations across the 50 most-recorded species in Washington. The most frequently seen is the Mule Deer, with 26,103 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
26,103 observations
Eastern Gray Squirrel
Sciurus carolinensis
13,154 observations
Eastern Cottontail
Sylvilagus floridanus
10,234 observations
Harbor Seal
Phoca vitulina
9,953 observations
Douglas's Squirrel
Tamiasciurus douglasii
7,060 observations
Common Raccoon
Procyon lotor
5,866 observations
Wapiti
Cervus canadensis
5,464 observations
North American River Otter
Lontra canadensis
4,971 observations
American Beaver
Castor canadensis
4,220 observations
Hoary Marmot
Marmota caligata
3,376 observations
Coyote
Canis latrans
3,352 observations
Orca
Orcinus orca
3,147 observations
Cascade Golden-mantled Ground Squirrel
Callospermophilus saturatus
2,908 observations
American Black Bear
Ursus americanus
2,866 observations
Townsend's Chipmunk
Neotamias townsendii
2,631 observations
American Pika
Ochotona princeps
2,492 observations
California Sea Lion
Zalophus californianus
2,332 observations
Steller Sea Lion
Eumetopias jubatus
2,097 observations
Yellow-bellied Marmot
Marmota flaviventris
1,777 observations
Coypu
Myocastor coypus
1,753 observations
Humpback Whale
Megaptera novaeangliae
1,670 observations
White-tailed Deer
Odocoileus virginianus
1,609 observations
Mountain Goat
Oreamnos americanus
1,596 observations
Douglas's Ground Squirrel
Otospermophilus douglasii
1,536 observations
Yellow-pine Chipmunk
Neotamias amoenus
1,471 observations
American Red Squirrel
Tamiasciurus hudsonicus
1,400 observations
Eastern Fox Squirrel
Sciurus niger
1,343 observations
Domestic Cat
Felis catus
1,126 observations
Muskrat
Ondatra zibethicus
1,116 observations
Red Fox
Vulpes vulpes
1,020 observations
Virginia Opossum
Didelphis virginiana
991 observations
Olympic Marmot
Marmota olympus
969 observations
European Rabbit
Oryctolagus cuniculus
928 observations · iNaturalist
American Mink
Neogale vison
906 observations
Snowshoe Hare
Lepus americanus
887 observations
Moose
Alces alces
881 observations
Western Deer Mouse
Peromyscus sonoriensis
735 observations
Bighorn Sheep
Ovis canadensis
719 observations
Harbour Porpoise
Phocoena phocoena
704 observations
Bobcat
Lynx rufus
699 observations
Brown Rat
Rattus norvegicus
640 observations
Grey Whale
Eschrichtius robustus
636 observations
Sea Otter
Enhydra lutris
567 observations
North American Porcupine
Erethizon dorsatum
520 observations
Mountain Lion
Puma concolor
483 observations
Northern Elephant Seal
Mirounga angustirostris
482 observations
Striped Skunk
Mephitis mephitis
482 observations
American Shrewmole
Neurotrichus gibbsii
475 observations
Long-tailed Weasel
Neogale frenata
444 observations · iNaturalist
Columbian Ground Squirrel
Urocitellus columbianus
377 observations
Mammals in nearby places
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