We have a 3 year old that will chase a ball until we stop throwing it, although we should we don't walk everyday. Our yard is large, and she can stretch out while fetching. In the house, as long as she can see us, she's fine taking it easy. Great shut off, not every pup or young dog is in need of constant attention and exercise. She's also very gentle with our 3 year granddaughter, usually laying within a few feet of her.