The food also contains soy products (later in the ingredient list) which are another frequent cause of food allergies in dogs. (dogfoodinsider.com)
On the other hand, however, hypoallergenic dog food is more far reaching, because it keeps out of the way any of the triggers which are common causes of allergies in dogs. (naturalseeker.com)
Interestingly, there are certain food items that cause allergy in every dog irrespective of size and weight while there are a few ingredients that only a few kinds of dogs are allergic to. (usbones.com)