Poor Mama cat. This sounds like a typical day in my home. One of the cats is always terrorizing or trying to intimidate another one. My girls are the worst at the growling and screaming thing. They can both be very big drama queens. All it takes is for sweet Alani or Blaze to get too close to them. All they want to do is to play with their sisters. Sometimes they also don't get along when I'm trying to sleep.This is another reason why I try to feed them before I go to bed so that their tummies are full so they'll sleep better. I've tried some time outs with Storm and they usually don't work with him. Good luck with Buddy.