It’s been estimated that something like one out of every seven dogs is prone to canine allergies. German Shepherds, in particular, can be more vulnerable to skin allergies which you’ll most commonly see manifesting as irritated, reddening skin or increased biting and scratching behavior. Common examples of foods which can trigger allergies in German Shepherds are wheat, corn, and soy, which is why some of the best food for German Shepherds is entirely grain-free. More surprising but also quite frequent allergens include meats like chicken and beef, and dairy products.
It’s also worth noting that the best dog food for German Shepherds also contains flaxseed oils or fish oil, as these are relatively rich in Omega-3 to help tone down the itching and swelling of your German Shepherd’s skin if he’s allergic. If you start to get an inkling that your German Shepherd has an allergy, however, always consult your vet straight away.