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Mammals of Olympic National Park

The mammals most often spotted in Olympic, ranked by recent research-grade observations.

9,325
recent observations
50
species listed
50
mammals

Naturalists have logged 9,325 research-grade observations across the 50 most-recorded species in Olympic. The most frequently seen is the Mule Deer, with 2,764 recorded sightings.

Rarer finds confirmed in Olympic include Olympic Marmot, Bobcat and Cuvier's Beaked Whale - uncommon enough that a sighting is worth logging.

Olympic MarmotBobcatCuvier's Beaked Whale

Most-observed mammals in Olympic

Mule Deer
Odocoileus hemionus
2,764 observations
Douglas's Squirrel
Tamiasciurus douglasii
1,060 observations
Wapiti
Cervus canadensis
983 observations
Olympic Marmot
Marmota olympus
974 observations
Yellow-pine Chipmunk
Neotamias amoenus
590 observations
American Black Bear
Ursus americanus
406 observations
Harbor Seal
Phoca vitulina
391 observations
Townsend's Chipmunk
Neotamias townsendii
373 observations
Snowshoe Hare
Lepus americanus
336 observations
North American River Otter
Lontra canadensis
311 observations
Common Raccoon
Procyon lotor
156 observations
Sea Otter
Enhydra lutris
126 observations
Mountain Goat
Oreamnos americanus
85 observations
Humpback Whale
Megaptera novaeangliae
64 observations
Mountain Lion
Puma concolor
57 observations
Grey Whale
Eschrichtius robustus
55 observations
Orca
Orcinus orca
50 observations
Coyote
Canis latrans
44 observations
California Sea Lion
Zalophus californianus
43 observations
Northern Elephant Seal
Mirounga angustirostris
39 observations
Mountain Beaver
Aplodontia rufa
38 observations
American Beaver
Castor canadensis
37 observations
Bobcat
Lynx rufus
34 observations
Domestic Cat
Felis catus
33 observations
Harbour Porpoise
Phocoena phocoena
31 observations
Steller Sea Lion
Eumetopias jubatus
27 observations
European Rabbit
Oryctolagus cuniculus
26 observations
Western Deer Mouse
Peromyscus sonoriensis
25 observations
Virginia Opossum
Didelphis virginiana
21 observations
Northern Pacific Jumping Mouse
Zapus trinotatus
21 observations
Long-tailed Weasel
Neogale frenata
18 observations · iNaturalist
American Shrewmole
Neurotrichus gibbsii
15 observations
American Mink
Neogale vison
11 observations
American Ermine
Mustela richardsonii
9 observations
Pacific White-sided Dolphin
Aethalodelphis obliquidens
9 observations · iNaturalist
Townsend's Vole
Microtus townsendii
6 observations
Bushy-tailed Woodrat
Neotoma cinerea
6 observations
Muskrat
Ondatra zibethicus
6 observations
Eastern Gray Squirrel
Sciurus carolinensis
6 observations
Coast Mole
Scapanus orarius
6 observations
Townsend's Big-eared Bat
Corynorhinus townsendii
6 observations
Dall's Porpoise
Phocoenoides dalli
5 observations
Common Minke Whale
Balaenoptera acutorostrata
4 observations
Cuvier's Beaked Whale
Ziphius cavirostris
3 observations
Eastern Cottontail
Sylvilagus floridanus
3 observations
Northwestern Deer Mouse
Peromyscus keeni
3 observations · iNaturalist
Trowbridge's Shrew
Sorex trowbridgii
3 observations
Silver-haired Bat
Lasionycteris noctivagans
2 observations
Black Rat
Rattus rattus
2 observations
House Mouse
Mus musculus
2 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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