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Mule Deer
Odocoileus hemionus
14,079 observations
Eastern Cottontail
Sylvilagus floridanus
7,481 observations
Eastern Gray Squirrel
Sciurus carolinensis
7,008 observations
Douglas's Squirrel
Tamiasciurus douglasii
5,449 observations
Harbor Seal
Phoca vitulina
5,426 observations
Common Raccoon
Procyon lotor
3,564 observations
American Beaver
Castor canadensis
2,931 observations
Hoary Marmot
Marmota caligata
2,705 observations
Elk
Cervus canadensis
2,546 observations
Coyote
Canis latrans
2,423 observations
Cascade Golden-mantled Ground Squirrel
Callospermophilus saturatus
2,370 observations
North American River Otter
Lontra canadensis
2,312 observations
American Pika
Ochotona princeps
2,054 observations
American Black Bear
Ursus americanus
1,769 observations
Orca
Orcinus orca
1,652 observations
Townsend's Chipmunk
Neotamias townsendii
1,529 observations
Yellow-bellied Marmot
Marmota flaviventris
1,505 observations
Mountain Goat
Oreamnos americanus
1,312 observations
California Sea Lion
Zalophus californianus
1,232 observations
White-tailed Deer
Odocoileus virginianus
1,155 observations
Yellow-pine Chipmunk
Neotamias amoenus
1,092 observations
Steller Sea Lion
Eumetopias jubatus
914 observations
Red Fox
Vulpes vulpes
894 observations
Domestic Cat
Felis catus
846 observations
Olympic Marmot
Marmota olympus
822 observations
Virginia Opossum
Didelphis virginiana
757 observations
Muskrat
Ondatra zibethicus
728 observations
Moose
Alces alces
682 observations
Snowshoe Hare
Lepus americanus
679 observations
Bobcat
Lynx rufus
516 observations
Bighorn Sheep
Ovis canadensis
506 observations
Eastern Fox Squirrel
Sciurus niger
506 observations
Humpback Whale
Megaptera novaeangliae
486 observations
Harbour Porpoise
Phocoena phocoena
477 observations
Coypu
Myocastor coypus
466 observations
North American Porcupine
Erethizon dorsatum
432 observations
Brown Rat
Rattus norvegicus
432 observations
American Red Squirrel
Tamiasciurus hudsonicus
426 observations
European Rabbit
Oryctolagus cuniculus
395 observations
Western Deer Mouse
Peromyscus sonoriensis
391 observations
Mountain Lion
Puma concolor
388 observations
American Mink
Neogale vison
384 observations
Grey Whale
Eschrichtius robustus
378 observations
American Shrewmole
Neurotrichus gibbsii
368 observations
Sea Otter
Enhydra lutris
341 observations
Long-tailed Weasel
Neogale frenata
322 observations
Douglas's Ground Squirrel
Otospermophilus douglasii
308 observations
Columbian Ground Squirrel
Urocitellus columbianus
307 observations
Striped Skunk
Mephitis mephitis
200 observations
Black Rat
Rattus rattus
186 observations
Frequently Asked Questions
- The 10 most common mammals in Washington are:
- Mule Deer (Odocoileus hemionus)
- Eastern Cottontail (Sylvilagus floridanus)
- Eastern Gray Squirrel (Sciurus carolinensis)
- Douglas's Squirrel (Tamiasciurus douglasii)
- Harbor Seal (Phoca vitulina)
- Common Raccoon (Procyon lotor)
- American Beaver (Castor canadensis)
- Hoary Marmot (Marmota caligata)
- Elk (Cervus canadensis)
- Coyote (Canis latrans)
- The most observed mammal in Washington is Mule Deer (Odocoileus hemionus), with 14,079 recorded observations.