I agree with the cure or quit notice. At the same time, I feel that allowing pets can really set you apart in the market, but you have to set tight restrictions. The bigger dogs do cause more damage, so restrict to small dogs <15 or 20lbs. They must have renters insurance to be able to cover any damages, maintain vaccines, and go through obedience school. I also meet all pets before...if the dog is friendly, their ears are back and they obey the owner's commands, then that tells me the owners and dog will probably be okay. if they pee when they meet you, seem afraid or are aggressive, then you don't want that liability.