I think the Mastiffs are pretty good house dogs, but like you said, only so long as you have enough house. I don't think they would be to good for the hardwood floors though... But I do tend to like real dogs... The little ankle biters just tend to piss me off...Then they start shaking and yap-yapping and I just want to stomp them to put them out of their misery...Though I really like Pugs...My Grandparents always had pugs.