family Sciuridae
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genus Sciurus
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genus Urocitellus
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genus Spermophilus
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genus Tamiasciurus
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genus Tamias
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genus Neotamias
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genus Marmota
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family Castoridae
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genus Castor
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family Muridae
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genus Ondatra
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family Geomyidae
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genus Thomomys
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all photographs Copyright (C) Douglas Herr
last updated 23 July 2022