Pax is the patriarch of our four dogs.  Every evening he starts the exit into our yard.  He barks at me indicating it is time.  He knows what he gets when he comes back into our house.  It is their evening biscuit.  He starts this process and the (our ???) other three dogs follow him into the yard.  All four know what they get when they come back into the house.  Pax really gets excited.  He “bounces up and down” excitedly.  It is hard to believe he is a twelve year old dog.  He lets us know in no uncertain terms what time it is for.  And the other dogs follow his lead.