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Mammals of Seattle, Washington

The mammals most often spotted near Seattle, ranked by recent research-grade observations.

27,351
recent observations
50
species listed
50
mammals

Naturalists have logged 27,351 research-grade observations across the 50 most-recorded species near Seattle. The most frequently seen is the Eastern Cottontail, with 5,963 recorded sightings.

Rarer finds confirmed near Seattle include Bobcat - uncommon enough that a sighting is worth logging.

Bobcat

Most-observed mammals near Seattle

Eastern Cottontail
Sylvilagus floridanus
5,963 observations
Eastern Gray Squirrel
Sciurus carolinensis
4,613 observations
Mule Deer
Odocoileus hemionus
2,356 observations
Harbor Seal
Phoca vitulina
2,185 observations
American Beaver
Castor canadensis
1,953 observations
Common Raccoon
Procyon lotor
1,688 observations
Douglas's Squirrel
Tamiasciurus douglasii
1,660 observations
Coyote
Canis latrans
964 observations
California Sea Lion
Zalophus californianus
764 observations
North American River Otter
Lontra canadensis
735 observations
Domestic Cat
Felis catus
518 observations
Brown Rat
Rattus norvegicus
426 observations
Muskrat
Ondatra zibethicus
350 observations
Orca
Orcinus orca
327 observations
Townsend's Chipmunk
Neotamias townsendii
322 observations
Bobcat
Lynx rufus
310 observations
Western Deer Mouse
Peromyscus sonoriensis
214 observations
American Shrewmole
Neurotrichus gibbsii
212 observations
American Black Bear
Ursus americanus
209 observations
Virginia Opossum
Didelphis virginiana
188 observations
Steller Sea Lion
Eumetopias jubatus
154 observations
Black Rat
Rattus rattus
142 observations
Harbour Porpoise
Phocoena phocoena
137 observations
Long-tailed Weasel
Neogale frenata
117 observations · iNaturalist
American Mink
Neogale vison
116 observations
European Rabbit
Oryctolagus cuniculus
114 observations
Wapiti
Cervus canadensis
103 observations
Mountain Beaver
Aplodontia rufa
85 observations
Humpback Whale
Megaptera novaeangliae
62 observations
Townsend's Vole
Microtus townsendii
57 observations
Coast Mole
Scapanus orarius
36 observations
Northern Elephant Seal
Mirounga angustirostris
32 observations
Northern Pacific Jumping Mouse
Zapus trinotatus
31 observations
Coypu
Myocastor coypus
26 observations
Townsend's Mole
Scapanus townsendii
26 observations
Grey Whale
Eschrichtius robustus
25 observations
Northern Flying Squirrel
Glaucomys sabrinus
20 observations
House Mouse
Mus musculus
18 observations
Silver-haired Bat
Lasionycteris noctivagans
12 observations
Mountain Lion
Puma concolor
12 observations
Snowshoe Hare
Lepus americanus
12 observations
American Ermine
Mustela richardsonii
11 observations
Big Brown Bat
Eptesicus fuscus
10 observations
Yellow-bellied Marmot
Marmota flaviventris
8 observations
Vagrant Shrew
Sorex vagrans
7 observations
Red Fox
Vulpes vulpes
6 observations
California Myotis
Myotis californicus
5 observations
North American Porcupine
Erethizon dorsatum
4 observations
Little Brown Bat
Myotis lucifugus
3 observations
Fin Whale
Balaenoptera physalus
3 observations

Built from recent research-grade iNaturalist observations. Identifications are community-sourced and may occasionally be wrong, and the ranking reflects where people record and photograph wildlife, so a species seen often here is not necessarily rare elsewhere. Some plants and animals are only out in certain seasons. Treat this as a lively snapshot of what people are finding, not a formal checklist.

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