摘要：·no luck and maybe even a headache.·a narrow escape the lucky fox can continue his quest.·beneath the snow pack.·lies an invisible

·no luck and maybe even a headache.

·a narrow escape the lucky fox can continue his quest.

·beneath the snow pack.

·lies an invisible world.

·bustling with activity.

·hundreds of small rodents called voles.

·scurry through a network of tunnels.

·nestled in the airy layer between solid earth and the snow above.

·the fox scores his prize.

·those are one of the most important prey species in yellowstone.

来源：动物大特辑