Thanks. I was reading of them raking each other and chasing each other in displays of dominance, and thought to myself, "Heck, what Irish Catholic kid hasn't done that to their siblings?"
They make a point to show what the whales do to each other in the film, but I suspect that this happens in the wild, too.
In honesty, he's not small, and if you plunked a big ole kid like that in my room when I was jostling for space in the first place, there'd be elbows all around to send a message.