I am curious if there is a potential problem bringing a Savannah into home that has had domestic male cats in the home in the past? I lost my cat companion due to illness, he was famous for marking everything and everyone who came in by head rubbing or rolling. I know most cats would just mark over the spot by rubbing the spot. My cat was neutered, he never sprayed, even though he would go through the motions. Is there a potential problem where the Savannah may spray or pee to mark the territory?
