Not an uncommon sight when you visit Yellowstone in the winter months. The fox and coyote will listen for a mouse or vole below the snow . and then dive down to catch their dinner. My dog does this too:)
Snow Diving Fox When the fox strikes, he strikes with style. ' A red fox listens out for mice scurrying six feet beneath the snow before diving head first into the drift. I don't know why, but I've seen this over and over, and it still cracks me up!