科學圖說

打滾的北極熊(Rolling Polar Bear)

北極熊在雪、冰上打滾，用意是清除獵捕、進食後的髒污。除了可恢復一身白淨的毛皮之外， 也可以降低異味，增高下一次獵捕的成功率。這樣一個小動作，關係這隻北極熊之後能否順利狩獵與生存，非常重要！

A polar bear is rolling in snow and ice. This is to eliminate dirt and debris acquired while hunting and feeding. In addition to restoring the white of the fur, it reduces odors, increasing the chance for success the next time it hunts. This small action is very important in determining whether this polar bear can continue to effectively hunt and survive.