One day while hunting one of the highly trained dogs was chasing some pigs by scent and collided with a big buck kangaroo that then held and wrestled the dog by its protective gear (boars have tusks like knives), the owner was horrified that his dog or the kangaroo would get hurt and run in to save both parties. You can see the dog trying to escape, wanting nothing to do with the kangaroo. The big buck kangaroo releases the dog when the owner gets close but then moves in to try and attack the human.
The man then confronts the animal, who lets go of the dog and the fight begins. After several hops, the man punches the kangaroo directly in the face, forcing him to bounce backward.
The punch stops the roo and makes him think about the situation, giving the owner and the dog time to disengage from the big wild animal and leaving it to hop off and I suppose wonder about what just happened. We laughed at the absurdity of the situation and at how unfortunate it was for the dog and kangaroo.
Our 6 foot-7 inch friend felt no malice to the kangaroo but had to step in and fix a bad situation before it got worse.