Dogs Scratched Lip Raw. You need to determine why your dog is scratching, he could have a nerve problem, an allergy to food, or to something else. Your dog may have rubbed it raw, under the couch or through the fence maybe?
Dog skin irritation manifests itself in a number of forms. Dog skin irritation around the mouth could indicate an allergic reaction, abscess, mites, rash, cyst, warts or a bacterial or fungal infection. If left untreated, chapped lips may impact your dog's appetite and lead to weight loss.