Our dog has red skin underneath on his paws and he is biting and licking them a lot. I think it could be Pododermatitis from what I read. But I want to find a natural remedy if possible. We have him on Merrick chicken with brown rice. He is a male 16 month old bullmastiff. He also has been shedding a lot. He does get steak and chicken mixed in with his food because he is very picky. He does not want to eat his kibble without something in it. But he also gets cheese from time to time. Anything that might help him?