There are three cats that hang around outside my apartment. They belong to other tenents. Well in the evenings I open my basement door so Kiki can watch through the screen. Tonight Kiki started going crazy, she was growling and all her hair was straight up. She started jumping up at the screen to get outside. Well I ran over to her and there was one of the outside cats just sitting there looking at her. The outside cat was not doing a thing, I think it just wanted a new friend I guess. This just stressed Kiki out beyond belief. I have never seen her act that way before. It took me about 10 minutes to get her calmed down. And as soon as she got off my lap she went right back to the door. I guess she is guarding her territory. She is my little protector.