91热爆

A red fox can stay in the cold heart of Yellowstone all winter, so long as it can find food. They hunt for mice that survive the winter insulated beneath the thick blanket of snow. Foxes are light enough to move about on the delicate crust, but the mice are six feet beneath it. The foxes listen for the tiny sounds of their prey moving about below but must take great care not to scare them away. When they've identifed the position of the mice, they leap into the air and dive into the snow head first, leaving nothing but their bushy tails visible above the snow.