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Range in Washington: Cascades and west.
habitat: Forests and thickets, moist areas.
diet: Herbivore.
habits: Mostly nocturnal, constructs burrows, occasionally diverts streams into its tunnels.
identification: Very short tail, white spot just below ear. Total length: 25-45 cm;
tail: 20-55 mm; mass: 500-1500 g.
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Range in Washington: Cascades.
habitat: Talus slopes.
diet: Herbivore.
habits: Hibernates.
identification: Black and whitish markings on head and shoulders, nose and patch between eyes whitish. Total length: 45-80 cm; tail: 15-25 cm; mass: 4-9 kg.
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Range in Washington: East of Cascades.
habitat: Open rocky areas, treeless habitat.
diet: Herbivore.
habits: Hibernates.
identification: Yellow belly, whitish spot between eyes. Total length: 45-70 cm; tail: 13-22 cm; mass: 2-5 kg.
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Range in Washington: Olympic mountains.
habitat: Talus slopes.
diet: Herbivore.
habits: Hibernates October to May.
identification: Brownish mixed with white; very similar and closely related to hoary marmot. Total length: 45-80 cm; tail: 15-25 cm; mass: 4-9 kg.
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Range in Washington: Introduced, mainly in cities.
habitat: City parks and yards.
diet: Herbivore, omnivore.
identification: Gray with reddish tones, silvery-tipped hairs. Occasionally black or albino. Total length: 40-50 cm; tail: 21-24 cm; mass: 400-700 g.
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Range in Washington: Lower east slope of southern Cascades; southwestward from Tacoma.
habitat: Oak woodland.
diet: Herbivore, acorns.
identification: Large and slate-gray with white belly, tail large and extremely bushy. Total length: 45-60 cm; tail: 25-30 cm; mass: 350-950 g.
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Range in Washington: Introduced, mainly in cities.
habitat: City parks.
diet: Herbivore
identification: Largest tree squirrel, large bushy tail with yellow-tipped hairs. Three color morphs: grey, black, or reddish. Total length: 45-70 cm; tail: 20-35 cm; mass: 500-1000 g.
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Range in Washington: Central Washington, near Cascades.
habitat: Open country.
diet: Herbivore.
habits: Hibernates.
identification: Brown with whitish flecking, light wash on sides of neck across shoulders to haunches, darker "V" on back. Total length: 35-50 cm; tail: 15-25 cm; mass: 280-740 g.
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Range in Washington: Eastern Washington.
habitat: Meadows and fields, associated with forests.
diet: Herbivore.
habits: Hibernates.
identification: Gray with yellow-orange beneath, tail bushy. Total length: 30-40 cm; tail: 8-12 cm; mass: 350-800 g.
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Range in Washington: Extreme northeastern and southeastern corners of the state.
habitat: Wooded and open rocky areas.
diet: Herbivore, also fungus.
habits: Hibernates.
identification: Body stripes like chipmunks, but no head stripes. Head and shoulders coppery-red. Total length: 25-30 cm; tail: 6-12 cm; mass: 175-275 g.
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General range: Southeast Oregon, Snake River Valley of Idaho, Nevada (except extreme south) extreme eastern central California, and western Utah.
Range in Washington: North of Yakima and west of Columbia River; disjunct from the rest of the species.
habitat: Sagebrush and grasslands.
diet: Herbivore.
habits: Hibernates.
identification: Gray; no spots; short tail. Total length: 17-27 cm; tail: 3-7 cm; mass: 125-325 g.
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General range: Cascades of Washington and extreme southern British Columbia.
Range in Washington: Cascades.
habitat: Wooded and open rocky areas.
diet: Herbivore, also fungus.
habits: Hibernates.
identification: Body stripes like chipmunks, but no head stripes. Upper pair of dark lines faint. Head and shoulders coppery-red. Total length: 25-30 cm; tail: 6-12 cm; mass: 175-275 g.
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General range: Recently recognized as a species occurring only in Washington.
Range in Washington: Southeast Washington south of Yakima River and west and north of Columbia River. Current recognition of this species does not include populations north of the Yakima River, which are considered to be Spermophilis mollis.
habitat: Grassland and sagebrush.
diet: Herbivore.
habits: Hibernates.
identification: Gray; no spots; short tail that is reddish below. Total length: 17-27 cm; tail: 3-7 cm; mass: 125-325 g.
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General range: Southeastern Washington and small area of Oregon in Gilliam, Morrow, and Umatilla Counties.
Range in Washington: East of Columbia River from center of state southward.
habitat: Sagebrush and grassland.
diet: Herbivore.
habits: Hiberntes.
identification: Gray; white spots; short tail with blackish tip. Total length: 18-25 cm; tail: 3-7 cm; mass: 150-280 g.
conservation: State Candidate; Federal Candidate.
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Range in Washington: Olympics, Cascades and east.
habitat: Forest and brush.
diet: Seeds, flowers, fruits.
habits: Hibernates.
identification: Stripes on body and head; brightly colored; underside of tail brownish-yellow. Total length: 180-245 mm; tail: 70-100 mm; mass: 30-73 g.
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Range in Washington: Central eastern Washington.
habitat: Sagebrush.
diet: Seeds, flowers, fruits.
habits: Hibernates.
identification: Stripes on body and head that continue to base of tail. Smallest, lightest chipmunk in Washington. Total length: 160-225 mm; tail: 70-115 mm; mass: 30-70 g.
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Range in Washington: Mountains of the extreme northeast.
habitat: Coniferous forests, talus slopes.
diet: Seeds, flowers, fruits.
habits: Hibernates.
identification: Stripes on body and head; rump gray; tail rufous above, dark reddish below; closely related to T. amoenus
. Total length: 22-25 cm; tail: 10-12 cm; mass: about 60 g.
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Range in Washington: Cascades and west.
habitat: Coniferous forest and brush.
diet: Seeds, flowers, fruits.
habits: Hibernates.
identification: Stripes on body and head, brownish stripe below ears. Largest, darkest chipmunk in Washington. Total length: 220-315 mm; tail: 90-150 mm; mass: 50-110 g.
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Range in Washington: Cascades and west.
habitat: Coniferous forest.
diet: Seeds of conifers.
habits: Territorial, hoards piles of cones, does not hibernate.
identification: Dark gray with orange-yellow beneath. Total length: 270-355 mm; tail: 100-155 mm; mass: 150-300 g.
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Range in Washington: Northward from Lake Chelan, Blue Mountains.
habitat: Coniferous forest.
diet: Seeds of conifers.
habits: Territorial, hoards piles of cones, highly arboreal.
identification: Gray with some red tinge, white beneath. Total length: 270-385 mm; tail: 90-155 mm; mass: 140-250 g.
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Range in Washington: All forested regions of the state.
habitat: Coniferous and mixed forests.
diet: Fungus, lichens.
habits: Nocturnal; glides from trees; highly arboreal; does not hibernate.
identification: Gliding skin between front and rear legs; large eyes. Total length: 25-35 cm; tail: 12-18 cm; mass: 45-70 g
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Range in Washington: Wet areas throughout the state.
habitat: Ponds, lakes, slow streams.
diet: Herbivore.
habits: Aquatic, builds dams and lodges.
identification: Largest rodent in North America, flat scaly tail. Total length: 90-115 cm; tail: 30-45 cm; mass: 20-27 kg.
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Range in Washington: Olympics and Tacoma area southward.
habitat: Most open habitats.
diet: Herbivore.
habits: Digs burrows with forelimbs and teeth, forages below ground, forms soil mounds.
identification: Pointed ear with black patch behind. Short tail, heavy jaw bone, big incisors. Total length: 180-240 mm; tail: 50-80 mm; mass: 50-95 g.
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Photo by Kelli Wood.
Range in Washington: Cascades and east.
habitat: Most open habitats.
diet: Herbivore.
habits: Digs burrows with forelimbs and teeth, forages below ground, forms soil mounds.
identification: Rounded ear with black patch behind. Short tail, heavy jaw bone, big incisors. Total length: 165-230 mm; tail: 40-75 mm; mass: 75-130 g.
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Photo by US Fish & Wildlife@Wikimedia Commons.
Range in Washington: Southern Columbia Basin.
habitat: Sagebrush, sandy areas.
diet: Granivore.
habits: Locomotion mainly bipedal.
identification: Long hind feet and tail, large head. Striped tail, with white tail stripes narrower than dark tail stripes. Total length: 200-280 mm; tail: 100-165 mm; mass: 50-95 g.
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Photo by Jim Kenagy.
Range in Washington: East of Cascades.
habitat: Sagebrush.
diet: Granivore; accumulates seed cache for winter.
habits: Hibernates. Locomotion mainly quadrupedal.
identification: Brownish, white beneath. Long tail, slightly crested toward tip. Total length: 150-200 mm; tail: 75-105 mm; mass: 17-31 g.
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Range in Washington: Mountains of northeast and southeast.
habitat: Meadows and thickets near streams.
diet: Granivore, herbivore.
habits: Hibernates; may drum the ground with its tail when alarmed.
identification: Golden sides; dark back; long tail; enlarged hind feet. Total length: 21-26 cm; tail: 13-16 cm; mass: 15-38 g.
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Range in Washington: Cascades and west.
habitat: Meadows in coniferous forests.
diet: Granivore, herbivore.
habits: Hibernates; may drum the ground with its tail when alarmed.
identification: Golden sides; dark back; long tail; enlarged hind feet. Total length: 21-26 cm; tail: 13-16 cm; mass: 15-38 g.
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Range in Washington: Statewide in mountains.
habitat: Forest or meadows in mountains.
diet: Herbivore.
identification: Short tail; red back. Total length: 12-16 cm; tail: 3-5 cm; mass: 16-42 g.
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Range in Washington: East of Cascades.
habitat: Sagebrush.
diet: Herbivore.
identification: Pale gray above, whitish below and on feet; short tail. Total length: 10-15 cm; tail: 1.5-3 cm; mass: 17-38 g.
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General range: Clark County, Washington and Willamette Valley of Oregon.
Range in Washington: Clark County
habitat: Grassy and agricultural lands.
diet: Herbivore
identification: Tail bicolored and short. Total length: 14-20 cm; tail: 3-7 cm; mass: 35-85 g.
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Range in Washington: Throughout the state except in sagebrush scrub.
habitat: Wet meadows.
diet: Herbivore.
identification: Tail bicolored; grayish-brown above, light gray below. Total length: 15-25 cm; tail: 5-12 cm; mass: 20-85 g.
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Range in Washington: Eastern base of the Cascades and eastward.
habitat: Wet meadows in forested areas.
diet: Herbivore.
identification: Tail bicolored; feet dusky or silvery-gray. Total length: 14-20 cm; tail: 3-7 cm; mass: 35-85 g.
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Range in Washington: Cascades and west.
habitat: Grassland or forest.
diet: Herbivore.
identification: Brown above, silvery below. Total length: 12-16 cm; tail: 3-5 cm; mass: 15-30 g.
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Range in Washington: Northeastern Washington.
habitat: Moist meadows.
diet: Herbivore.
identification: Gray with silver-tipped hair below. Total length: 14-20 cm; tail: 3-6 cm; mass: 20-70 g.
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Range in Washington: Cascades and Blue Mountains.
habitat: Marshes, streams, and wet meadows.
diet: Herbivore.
identification: Grayish to reddish above, white to silver below; long bicolored tail. Total length: 20-26 cm; tail: 7-9 cm.
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Range in Washington: Western Washington lowlands.
habitat: Marshes, streams, and wet meadows.
diet: Herbivore.
identification: Dark brown above, gray below; feet dusky; large ears. Total length: 15-25 cm; tail: 5-8 cm; mass: 40-100 g.
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Range in Washington: Statewide.
habitat: Marshes and ponds.
diet: Herbivore.
habits: Aquatic.
identification: Tail slightly flattened for swimming; large compared to other members of its family. Total length: 41-62 cm; tail: 18-30 cm; mass: 540-1800 g.
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Range in Washington: High mountains.
habitat: Forests or meadows in high mountains.
diet: Herbivore.
identification: Grizzled brown above, silver below; white feet. Total length: 13-15 cm; tail: 2-4 cm; mass: 15-40 g.
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Range in Washington: Northern border of state.
habitat: Alpine meadows.
diet: Herbivore.
identification: Brown above, gray below; short, bicolored tail. Total length: 12-14 cm; tail: 2-3 cm; mass: 25-35 g.
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General range: Throughout most of the world in close association with humans.
Range in Washington: Human habitations and all nearby habitats. Introduced.
habitat: Buildings, areas with good cover, cultivated fields.
diet: Opportunistic; seeds, human food, insects.
identification: Grayish-brown above, nearly the same color below. Total length: 13-20 cm; tail: 6-10 cm; mass: 18-23 g.
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General range: Worldwide; in warmer climates, restricted to habitats modified by humans.
Range in Washington: Urban areas; sometimes nearby habitats. Introduced.
habitat: Human dwellings, cities, cultivated fields.
diet: Omnivore.
identification: Brownish-gray above, grayish below; scaly tail. Total length: 30-45 cm; tail: 12-20 cm; mass: 195-485 g.
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General range: Worldwide in tropic and temperate zones.
Range in Washington: Human habitations and nearby habitats. Introduced.
habitat: Seaports and buildings.
diet: Omnivore.
identification: Brownish or grayish above, lighter below; sparsely-haired tail. Total length: 30-45 cm; tail: 16-25 cm; mass: 115-350 g.
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Range in Washington: Statewide.
habitat: Many habitats, often associated with rocks.
diet: Herbivore
habits: The original "Packrat"; collects objects, preferably shiny.
identification: Very large body size; bushy tail. Total length: 30-45 cm; tail: 12-25 cm; mass: 155-445 g.
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Range in Washington: East of Cascades.
habitat: Sandy sagebrush.
diet: Insects; strong predatory behavior.
identification: Grayish or buff above, white below; bicolored tail with white tip. Total length: 13-20 cm; tail: 3-6 cm; mass: 27-52 g.
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Range in Washington: Western Washington
habitat: All habitats.
diet: Granivore, omnivore.
identification: Grayish-brown above, white below. Similar to P. maniculatus, but tail longer. Total length: 12-22 cm; tail: 5-12 cm; mass: 10-33 g.
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Range in Washington: East of Cascades.
habitat: Grassland, marshes.
diet: Seeds, plants, insects.
identification: Ears partly furred; smaller than Peromyscus. Total length: 11-17 cm; tail: 5-10 cm; mass: 9-22 g.
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Range in Washington: Statewide.
habitat: Forested areas.
diet: Herbivore; twigs, leaves of trees.
identification: Quills cover body. Total length: 65-93 cm; tail: 15-30 cm; mass: 4-18 kg.
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