 The red fox is yet another animal that inhabits Isle Royale; red foxes mainly feed on snowshoe hares and occasionally scavenge on moose, or any other meat a wolf leaves behind.Wolves do not commonly hunt foxes, though wolves have been observed killing foxes when they attempt to feed on an animal carcass.In 1958, as a graduate student at Purdue University, L. David Mech began studying the wolves of Isle Royale.