My last dog had severe allergies (coincidentally his name was Oliver too!) and I did vet tests for years - after hundreds of $$ they still couldn't tell me what he was allergic to. Even though I tried switching his kibble several times, I never tried home cooking for him. I think that's probably worth a shot. Dog food is so full of fillers and preservatives, he could be allergic to any one of them. You could try the natural diet and if it doesn't improve things in a few months, then go do the (expensive) vet tests. |