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Mule Deer
Odocoileus hemionus
13,403 observations
Eastern Cottontail
Sylvilagus floridanus
6,796 observations
Eastern Gray Squirrel
Sciurus carolinensis
6,687 observations
Douglas's Squirrel
Tamiasciurus douglasii
5,206 observations
Harbor Seal
Phoca vitulina
5,201 observations
Common Raccoon
Procyon lotor
3,429 observations
American Beaver
Castor canadensis
2,699 observations
Hoary Marmot
Marmota caligata
2,650 observations
Wapiti
Cervus canadensis
2,432 observations
Cascade Golden-mantled Ground Squirrel
Callospermophilus saturatus
2,338 observations
Coyote
Canis latrans
2,312 observations
North American River Otter
Lontra canadensis
2,245 observations
American Pika
Ochotona princeps
2,007 observations
American Black Bear
Ursus americanus
1,668 observations
Orca
Orcinus orca
1,574 observations
Townsend's Chipmunk
Neotamias townsendii
1,468 observations
Yellow-bellied Marmot
Marmota flaviventris
1,344 observations
Mountain Goat
Oreamnos americanus
1,286 observations
White-tailed Deer
Odocoileus virginianus
1,111 observations
California Sea Lion
Zalophus californianus
1,098 observations
Yellow-pine Chipmunk
Neotamias amoenus
1,038 observations
Steller Sea Lion
Eumetopias jubatus
878 observations
Red Fox
Vulpes vulpes
856 observations
Domestic Cat
Felis catus
827 observations
Olympic Marmot
Marmota olympus
794 observations
Virginia Opossum
Didelphis virginiana
728 observations
Muskrat
Ondatra zibethicus
666 observations
Snowshoe Hare
Lepus americanus
647 observations
Moose
Alces alces
639 observations
Bobcat
Lynx rufus
481 observations
Bighorn Sheep
Ovis canadensis
481 observations
Eastern Fox Squirrel
Sciurus niger
477 observations
Humpback Whale
Megaptera novaeangliae
466 observations
Harbour Porpoise
Phocoena phocoena
462 observations
Coypu
Myocastor coypus
450 observations
North American Porcupine
Erethizon dorsatum
421 observations
American Red Squirrel
Tamiasciurus hudsonicus
399 observations
European Rabbit
Oryctolagus cuniculus
391 observations
Brown Rat
Rattus norvegicus
381 observations
American Mink
Neogale vison
374 observations
Mountain Lion
Puma concolor
366 observations
Western Deer Mouse
Peromyscus sonoriensis
346 observations
Grey Whale
Eschrichtius robustus
337 observations
American Shrewmole
Neurotrichus gibbsii
327 observations
Sea Otter
Enhydra lutris
326 observations
Long-tailed Weasel
Neogale frenata
295 observations
Douglas's Ground Squirrel
Otospermophilus douglasii
294 observations
Columbian Ground Squirrel
Urocitellus columbianus
291 observations
Striped Skunk
Mephitis mephitis
186 observations
Northern Elephant Seal
Mirounga angustirostris
173 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)
- Wapiti (Cervus canadensis)
- Cascade Golden-mantled Ground Squirrel (Callospermophilus saturatus)
- The most observed mammal in Washington is Mule Deer (Odocoileus hemionus), with 13,403 recorded observations.