Believe it or not
They wrestle.
Remus strongly disagrees with it and not only verbalizes it;
He often rushes Sirius and throws him off as a ram would butting into a lynx.
Every yelp and thump just serves to make James uncomfortable.
Sirius though,
Is aware he isn't the sharpest tool in the shed
But he's not an idiot.
Left.
Always the right side, Sirius takes care to remind himself.
He's sprained wrists and taken blows
Smiling.
He has a sweet disposition toward his mate.
Holding
Playing
Caressing
Never biting.
AN: The last line contradicts "Magic" I know, Biting is a metaphor (at least in this case) for the act of physically harming rather than literally biting.
In Prisoner of Azkaban, Sirius tells Ron he's sorry for the injury to his leg (when as an animagus he dragged him by the leg breaking skin unintentionally); mentioning he usually had a sweet disposition in his animagus form which has to do with inner traits and personality.
My apologizes if this note seems unnecessary but I didn't want there to be any confusion for any readers that might misinterpret this piece since this is for your enjoyment.