Mac has started incessant meowing at my son at night. It starts off as cute little meows and eventually turns agressive and he bats at Kevin. He used to do this a bit when he was younger, but hasn't for several years now. This just restarted a few days ago. I do believe a visit to the white coats in called for. When he stops, after about 20 minutes, he is his same old lovable, lapcat, self. Anyone have any ideas?