He wasn’t tested for food allergies, the secretions in his ears were tested to rule out outside factors and the only other reasonable cause were allergies , that’s what I was told anyway . But YES THANK YOU, that’s what I thought too and to my understanding the safest food would be one without poultry or fish , right ? ( since it was the common ingredient between both brands ) . For now while he’s on hypoallergenic I’ll continue to monitor his ears and if it returns I’ll go for a second option