How do you make a cat in alchemy genetics?

Answer 1

You don't. Alchemy is a false science. Even at the time when they thought there was such a thing as alchemy, they had no clue what genetics was. So they probably didn't know either, and even if alchemy was real and you managed to figure how to engineer a cat from like a piece of lead or something you would probably be hanged as a witch. So there really is no way.