アメリカ内務省のインスタグラム(usinterior) - 10月15日 07時49分

Things you do when you think no one is looking. The #bison at National Bison Range in #Montana don't care. Called wallowing, rolling in the dirt helps deter biting flies and remove molted fur. Video by @USFWS.

[BIHAKUEN]UVシールド(UVShield)

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