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10 BELOW

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In late fall and early winter, the bison develops a thick dark brown coat in preparation for the coming cold. The bison has ample protection from Yellowstone's frigid winter temperatures as it wooly undercoat is protected by an insulating layer of coarse guard hairs.
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In late fall and early winter, the bison develops a thick dark brown coat in preparation for the coming cold. The bison has ample protection from Yellowstone's frigid winter temperatures as it wooly undercoat is protected by an insulating layer of coarse guard hairs.