One tired dog

An old, tired-looking dog wandered into the yard. I could tell from his
collar (though no tags), and well-fed belly and clean that he had a
home. He followed me into the house, down the hall, and fell asleep on
the couch.

My dogs didn't seem to mind and He seemed like a good dog and I was Ok
with him, so I let him nap. 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
that I wrote: 'Every afternoon your dog comes to my house for a nap. I
don't mind but want to be sure it's ok with you. '

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. May I come with him tomorrow?'