If your dog has dry skin or dry flaky skin, it could be due to allergies. Two of the most common dog allergies are: dog food allergies and dog skin allergies. Here’s how to tell if your dog is allergic — by studying dog allergies symptoms. Plus an overview of which dog allergy treatments work best with dog skin issues. These home remedies for dry skin on dogs will help to alleviate the excessive itching and scratching once and for all!