All my dogs were and are indoor dogs, no matter what size and breed. Since they were puppies I taught them house manners, and as a matter of fact, they prefer to be indoor rather then outdoor even with backyard available. They like to be where I am, even when I leave for work they'd be inside because they feel my presence there (smells, things etc.), on a couch or their beds. But I compensate for them with 3-4 walks a day, at least one of those long one, they get plenty of exercise, whether it's physical or mental.