My Dog is Crazy

Well, I knew I had a picky eater when I brought home an eight-week-old puppy that wandered away from his food dish 49 times each meal and flatly refused to eat a midday meal. It's taken me five months to realize what the problem is (to be confirmed upon further experimentation). I've added canned food, yogurt, a few treats, and salmon oil and always added warm water to it. He's out there in his little ex-pen right now with his usual food, this time with salmon oil on it right next to a dish of plain kibble. He is scarfing the plain kibble. What kind of dog prefers plain kibble over tasty things? I mean, it's good kibble, but surely not that good.