Michio Hoshino / Arctic Ground Squirrel (Spermophilus parryii) peeking out of its hole, Alaska
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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 can drop as low as 2.9 C (26.8 F) the lowest known naturally oc...
01446071
Ingo Arndt / Arctic Ground Squirrel (Spermophilus parryii) hibernating in its burrow, University of Fairbanks, Alaska, captive. It's body temperature drop as low as ?2.9 C (26.8 F) the lowest known naturally occur...
01446059
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...
Matthias Breiter / Arctic Ground Squirrel (Spermophilus parryii) with wildflowers, Hudson Bay, Manitoba, Canada
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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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Donald M. Jones / Arctic Ground Squirrel (Spermophilus parryii) in snow, central Alaska
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Donald M. Jones / Arctic Ground Squirrel (Spermophilus parryii) in snow, central Alaska
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Donald M. Jones / Arctic Ground Squirrel (Spermophilus parryii) in snow, central Alaska
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Donald M. Jones / Arctic Ground Squirrel (Spermophilus parryii) feeding in snow, central Alaska
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Donald M. Jones / Arctic Ground Squirrel (Spermophilus parryii) feeding in snow, central Alaska
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Donald M. Jones / Arctic Ground Squirrel (Spermophilus parryii) running through snow, central Alaska
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Donald M. Jones / Arctic Ground Squirrel (Spermophilus parryii), central Alaska
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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.
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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Donald M. Jones / Arctic Ground Squirrel (Spermophilus parryii) standing guard, Denali National Park, Alaska
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Donald M. Jones / Arctic Ground Squirrel (Spermophilus parryii), Denali National Park, Alaska
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Michael Quinton / Arctic Ground Squirrel (spermophilus parryii) hanging from rock, Yukon, Canada
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Michael Quinton / Arctic Ground Squirrel (spermophilus parryii), Yukon, Canada
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Michael Quinton / Arctic Ground Squirrel (spermophilus parryii) standing on hind legs, Yukon, Canada
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Michael Quinton / Arctic Ground Squirrel (spermophilus parryii) melanistic dark coloring, Alaska
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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.