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.