The north american neighbor of Cryopterus. If you speak a bit ancient greek (implausible, I do not even speak) you know what he mainly feed in the summer.
During the warmer month they come togther at some rivers and hunt. When the salmons are gone they eat, deers, reindeers, rabbits and sometimes a young elk. In the winter they sleep the most time. Because they can't fly with a fat layer, they bury most of the prey in the frozen ground for later.