I have been working on an applique quilt called "Kool Kats" which was from Australia. For some reason the one cat pattern is all messed up. No legs, wrong body, lol. I was wondering if anybody remembers where this came from. It was from a quilting site in Australia but they don't exist anymore.

There are lots of sites on Google and I mean a lot. Have you tried contacting Australian (and then any) quilt clubs to see if any quilter might have it. Another thought would be to find a similar design or unusual one that you can put on the quilt and either hide it as much as possible or highlight it by putting it in the middle.
I've been there and done that so I hope you have good luck.