Dog tired...

This is a feeling I can definitely relate to!

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?'