Overall, I think that the animals themselves are fascinating enough to have to resort to fighting among themselves to attract attention.
But when I saw the video I was surprised. The polar bear is an apex predator and is billed as the largest land predator. They can weigh 1550 lb and measure 8,5 fts long. With these measures, I always thought that the polar bear could make any other predator on. But ... apparently yes. His cousin the grizzly famosisísimo. The latter is shorter (8,2 fts) and weighs slightly less (up to 1450 lb) than the polar bear. Although the Grizzly is more fierce, strong and brave. Otherwise, watch the video.