I have an extremely picky eater as well, but now that I homecook, he usually eats really well...I cook enough food to last 3-4 weeks, and I bag it in 2 day portions. Have you tried giving your furbaby goat's milk yogurt or nonfat organic plain yogurt with little pieces of apple(peeled and no seeds, of course) or watermelon?? You might be able to give him glucosamine in powder form in the yogurt with fruit. Buddy is such a handsome little yorkie