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:)
Kuda-Kitsune or Kanko (管狐, "pipe fox"?) is a creature supposedly employed by Japanese kitsune-tsukai, those who use foxes as spirit familiars. Its use is described as a rat-sized fox which can be kept in a tobacco pipe.