The cats got into a little tiff and got separated. The oldest is being cowed by the youngest. It would be funny if it didn't evoke such strong memories of bullying. So after repeated attempts to stop them, I put the youngest in the bathroom and closed the door.

They remind me of my kids. The oldest gets SO annoyed but has no recourse. Getting into a fistfight with a sibling might be part of growing up, but not with an age gap like theirs. She's old enough to know better, but the other one is still too young to care! (DD1 is 18, DD2 is 7.) There would be jail time!