McCarthy is absolutely correct. He hit the dog owner right on top of his empty head.
My observation of the dog owner is that of an emotional, spiritual, and intellectual runt. Ego bruised, weakened and, God forbid, even challenged by the slings and arrows of life, they slink home to their one true "friend." They find refuge and strength from a Pavolian salivating, yelping, frightened, territorial-crazed dumb dog.
Animal lovers, do yourselves and everybody a favor, allow your values to mature and become people lovers.