Pets are pretty funny. They get in habits like the rest of us. It seems our dog forgets nothing. If you do something once, like give him a treat at the bank drive through, he never forgets. We don't take him to any drive through any more. He goes nuts until he gets a treat. He also thinks the drive up mail box at the post office should be giving out treats.
This dog knows when it's bed time and runs to his owners bed...and he always brings something. Usually it's his blanket, but other things will do in a pinch.