If you ever inherit a Puss, be nice and gentle to him. Feed him, do not leave him without water, change his sand regularly, an read him stories at load. Soon your puss will grow up and will appreciate your cares. He can make you The Marquis de Carabas and marry you for a princess. He can make you just a good person (and not a Marquis) and marry you for a regular beautiful girl who will be your princess forever.
May be you will be married happily without his help but anyway the Puss will not harm you.