By Dr. Gary Pusillo: Does it matter? It does not matter if I have a fireplace today when it is 28 degrees outside; it matters if I am warm. It does not matter if I have the best hand soap in the world; it matters if I get the swine flu or not. It does not matter if I have the most highly advertised pet food in the world; it matters if my pet has a quality of life that is the best that I can provide. This is key to being a “petatarian.” My fireplace is blazing right now, but it did not start itself. Earlier this year I had...