I've actually been known to hiss at my cats when I want immediate attention.

I did this to Jan the other day when she had a claw stuck in my sweater and I wanted her to back off right away.

Seriously though, gosh what a heartbreaking story this has been. I can sure understand where Mr. Magoo is coming from, he has the need to be extra agressive right now so that he isn't taken advantage of, but it must be so hard.