Thanks, I just realized you are probably right. And along with the running eyes, he seems to be breathing too laboriously for a puppy.
I suspect it is chicken.
I currently feed him a blend comprising of
-Merrick puppy kibbles (Organic Chicken, Turkey Meal, Oatmeal, Duck, Chicken Meal, Whole Barley, Whole Brown Rice, Flax Seed, Canola Oil (preserved with mixed tocopherols – a source of Natural Vitamin E and Ascorbic Acid, a source of Vitamin C), Freeze Dried Sweet Potatoes, Freeze Dried Carrots, Freeze Dried Peas, Natural Dried Chicken Liver, Freeze Dried Apples,)
-Merrick puppy canned (Deboned Turkey, Chicken Broth, Chicken, Duck, Peas, Sweet Potato, Carrots, Apples, Potato, Dried Egg Product, Natural Chicken Flavor,)
-omega 3 supplement.
Treats = lamb lungs, chicken liver, dog biscuits, occasional greenies, various bones, tails, ears.
In the past 2 weeks I'd increased the amount of treats by adding the chicken liver treats. He used to just get lamb lungs.
The problem with the elimination diet is the puppy kibbles he's on seems to contain all ingredients, so I don't know how feed exclusively an igredient he's never been exposed to. I suspect it is either chicken or wheat, but not sure which. (Biscuits also contain wheat probably, and the number of biscuits he's received has increased)
I've even given him buffalo canned food before. What other proteins are there? I think I have to do duck.