An hour later he went to the door, and I let him out. The next day he was back, resumed his position on the couch, and slept for an hour.
This continued for several weeks.
Curious, I pinned a note to his collar, "Every afternoon your dog comes to my house for a nap."
The next day he arrived with a different note pinned to his collar, "He lives in a home with ten children. He's trying to catch up on his sleep.
Spoiler: