While she is sound asleep, hold a very special and smelly treat under her nose and watch while her nose slowly becomes aware of the odor and then she starts to twitch and finally the message hits her brain and she slowly lifts one eye, spies the treat at the end of her nose, sticks her tongue out and flicks the treat in her mouth, chews for a moment, closes her eyes and is back to sleep even as she executes her final swallow.
When a dog has a good life, he or she has a REALLY good life.