My understanding is that Friday cat blogging used to be a thing. It looks like I'm late to the party, though.
When I got home from vacation, he was acting snippy, meowing when I petted him, etc. He's calmed down, and is now taking out his aggression on the go board.
The initial high approach to komoku exhibits an aggressive stance, intended to show fighting spirit and take the opponent out of his game, as does sitting on three-quarters of the board.