Danny Green / Arctic ground squirrel (Spermophilus parryii) portrait, Denali National Park, Alaska, USA, September.
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Ingo Arndt / Arctic Ground Squirrel (Spermophilus parryii) hibernating in it's burrow, University of Fairbanks, Alaska, captive. It's body temperature drop as low as ?2.9 C (26.8 F) the lowest known naturally occu...
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Ingo Arndt / Arctic Ground Squirrel (Spermophilus parryii) hibernating in its burrow / University of Fairbanks, Alaska, captive. Its body temperature drop as low as ?2.9 C (26.8 F) the lowest known naturally occur...
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Loic Poidevin / Arctic ground squirrel (Spermophilus parryii) Katmai National Park, Alaska, USA, August
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Loic Poidevin / Arctic ground squirrel (Spermophilus parryii) Katmai National Park, Alaska, USA, August
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Loic Poidevin / Arctic ground squirrel (Spermophilus parryii) Katmai National Park, Alaska, USA, August
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Loic Poidevin / Arctic ground squirrel (Spermophilus parryii) Katmai National Park, Alaska, USA, August
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John Abbott / Arctic ground squirrel (Spermophilus parryii) feeding on flower, Savage River, Denali National Park, Denali Borough, Alaska, USA, July.
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Bryan and Cherry Alexander / Arctic ground squirrel (Urocitellus parryii) on summer tundra. Iultinsky District, Chukotka, Siberia, Russia, August 2013.
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Vladimir Medvedev / Arctic / Parry's ground squirrel (Spermophilus parryii, Magadan oblast, Far East Russia, May
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Vladimir Medvedev / Arctic / Parry's ground squirrel (Spermophilus parryii, Magadan oblast, Far East Russia, May
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Vladimir Medvedev / Arctic / Parry's ground squirrel (Spermophilus parryii, Magadan oblast, Far East Russia, May
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Konstantin Mikhailov / Arctic / Parry's Ground squirrel (Spermophilus parryii; Sciuridae) sitting on hind legs, in upland tundra in autumn. Denali NP, Alaska, USA, North America.
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Konstantin Mikhailov / Arctic / Parry's Ground squirrel (Spermophilus parryii; Sciuridae) foraging on upland tundra in autumn. Denali NP, Alaska, USA, North America.
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Konstantin Mikhailov / Arctic / Parry's Ground squirrel (Spermophilus parryii; Sciuridae) on upland tundra in autumn. Denali NP, Alaska, USA, North America.