アメリカ内務省のインスタグラム(usinterior) - 12月23日 00時20分

"I'm fine. This is fine. Everything's fine."

But seriously, it's fine. In winter, #bison develop dual-layer coats that protect them from subzero temperatures and harsh winds. The coats are so effective at insulating that when snow accumulates, it will not melt from the heat of the bison's skin.

Photo of a snow-covered bison in @yellowstoneNPS by Jacob W. Frank / National Park Service #Montana #YellowstonePledge #PeaceInParks

[BIHAKUEN]UVシールド(UVShield)

>> 飲む日焼け止め！「UVシールド」を購入する

• yellowstoneNPS