Not sure what you mean. A simple Google search reveals all kinds of fossilized cats, including the popular Sabre Toothed Tiger, Proailurus, Hoplophoneus, Panthera Blytheae, etc.
Incidentally, not all definitions of fossil include the idea on mineral migration into bone. eg Merriam-Webster: "a remnant, impression, or trace of an organism of past geologic ages that has been preserved in the earth's crust".
Dictionary.com defines it as "any remains, impression, or trace of a living thing of a former geologic age, as a skeleton, footprint, etc. "
Semantics, I know.
I should have been more specific. I was referring to domesticated cats, felis catus, the things I saw mummies of in Egypt. They're only known to go back maybe 10,000 years, and there aren't any fossilized specimens.
Incidentally, not all definitions of fossil include the idea on mineral migration into bone.
Again, I could have been more specific. I was referring to fossilized animals themselves, not just their traces. It was in the context of explaining that fossilization and mummification aren't the same or even parallel processes--that a fossilized organism is not just another kind of mummy. You are quite right that fossils don't have to be an organism at all--but mummies do, and that was the context.