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.
 Curious I pinned a note to his collar: 
 'I would like to find out who the owner of this wonderful  sweet dog is and ask 
 if you are aware that almost every afternoon your dog  comes to my house for a nap.'
 The next day he arrived for his  nap, with a different note pinned to his collar: 
 'He lives in a home with 6 children, 2 under the age of 3  - he's trying to catch up on his sleep. 
 Can I come with him  tomorrow?'