The incident was likely an opportunistic kill, with the fox preying on the small pup to possibly threaten the survival of the ...

Wolves hunting foxes is heard of, but the reverse has never been recorded, making this incident extremely rare.

We are used to seeing a strict order in nature, with apex predators at the top feeding on those lower down the pecking order.

Alaska's wolf man, Frank Glaser, spent more than four decades in Alaska tracking and trapping wolves. Here's his take on wolf attacks.