The younger males like to fight. That's a much better way to stretch their muscles than do Yoga like the older bears! But keep in mind - a healthy male, even after five months of fasting, may weigh over 1,300 pounds (625kg), and when they stand up, can tower as high as 10-12 feet (3-4m)!
Make no mistake: this is neither ballet nor slow dancing. Not even American football. This interaction is forceful, powerful, and aggressive. Yet, at the same time it is gentle in the sense that they do not really mean to kill each other. watch this bear's tooth near the other one's mouth - Can you imagine being seriously bitten by it? (click to enlarge)
"But, so long that we're fighting, we should try some Sumo wrestling!" Yes, the Polar bears know not only how to take advantage of their height, but also of their sheer mass and strength, and so on occasion one sees what can only be called Sumo Wrestling in The Arctic. In the two pictures below, notice the "dynamics of the fight" - Can you tell who's winning?
However, in the end all the Polar bears care about at that point is the upcoming seal hunting season, so they end the game with a friendly, yet "let's be sure who's stronger here" Give Me Five
Read about The Brown Bears of Katmai in my previous post