Oh, and fundamental to canine development as well. It was and has been a synergistic association.
Dogs got food, warmth and protection too.
And music.
And BACON! :)
I get a kick out of how my dogs have to do absolutely nothing, sleep on a $2000 mattress, and are kept warm or cool while we go out and work for them. They owe the hard work of their ancestors a lot - but then again, we owe ours a lot, too.