Cat on my desktop?

I am starved for feline attention. :( All I have is a fish and I do love him but, well, he’s not cuddly, nor does he crawl into my lap.

So…instead, I want a cat on my desktop. Does anyone know a program (preferably free) that will allow me to do this? I think I remember playing on a hospital computer when I was 8ish that had a black/white cat that would respond to your click, do random things, follow your cursor and basically just exist and be cute.

I’m kind of looking for something similar…

Edited to add: I’m looking for a kitty that will be on the desktop. I don’t like the MS Word kitty. He’s unrealistic and just nods his head most of the time. :(