I was going to say mix in a little chicken w/ the dog food, but then I see you've tried this. Have you tried chicken broth (low salt) on his dog food? Also, another thing to try is Parmesan Cheese (the cheap stuff, in the can) and sprinkle it on the food. Parm is pungent and can help get dogs interested.
Also, have you tried canned wet dog food?
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°¨¨¨°ºOº°¨¨¨° Ann | Pfeiffer | Marcel Verdel Purcell | Wylie | Artie °¨¨¨°ºOº°¨¨¨° |