I suspect that my cat might be Jewish, but I'm not sure. I do have several reasons for my suspicion. He seems to love my sforim and will consistently sit on top of them when they are left out. If I try to read a sefer, he will often jump into my lap and sit between me and the page, so he can see it. He clearly prefers my kosher fish to his food which lacks hashgacha. Every Shabbos, he naps in the afternoon. He has even shown fascination with my tzitzis. Finally, he has never asked me for a cheeseburger.
I would love to determine once and for all if he is a Jew. How can I tell?