I agree--it's Chewy's house, and visitors should know the rules!!
We rent a room to a friend, and his girlfriend HATES dogs (there's something wrong with her, I think)--she came over once and was screaming and running around the table--Kito kept chasing her--he thought she was playing!! I told her to settle down, and pet him, all he wants is a little attention, and she said "I don't touch pets, they're dirty" So anyway, I told her to shut up, and if she didn't like it, not to come over any more. I think I've seen her 3 times since then, and that was in August. I didn't mean to be such a witch, but it is HIS house, and not hers, accept it, or don't come over. Not that you should tell your uncle, but you get my drift.