It’s unfortunate that SO many allergies dogs have are a direct result from their diet! Carbs and starches in all kibble are a huge cause for this. My dog had horrible ear issues the entire 5 years we fed her kibble and after switching her to a raw diet her ear issues vanished. I implore people to focus on what goes into your dogs diet as many of these illnesses are from diet! Here is a great article from dogs naturally magazine on how apoguel suppresses the immune system to prevent allergic reactions. And we all know a weak immune system is an open door for cancer. article here