Here we go again..For a while now I've had no problem w/ Mizu eating his food. I would fill his bowl and turn around and it would be gone in a flash. For the past couple weeks Mizu won't even touch his food. I would have to sit w/ him and try to feed him. Should I change his dogfood again ? I heard of a gravy to top off dog food, has anyone tried this ? Do they just get bored of their food every 3 months or what ?