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环颈旅鼠属(环颈旅鼠),哺乳纲、囓齿目、鼠科的一属,而与环颈旅鼠属(环颈旅鼠)同科的动物尚有鼹形田鼠属(鼹形田鼠)等之数种哺乳动物。
Dicrostonyx is a genus of rodent in the family Cricetidae. It contains the collared lemmings. They are the only North American rodents that turn completely white in winter. It contains the following species:
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