An older, tired-looking dog wandered into my yard. I could tell from his collar and well-fed belly that he had a home and was well taken care of.
He calmly came over to me, I gave him a few pats on his head. He then followed me into my house, slowly walked down the hall, curled up in the corner and fell asleep.
An hour later, he went to the door, and I let him out.
The next day he was back, greeted me in my yard, walked inside and resumed his spot in the hall and again slept for about an hour. This continued off and on for several weeks.