my JR Dexter is 2 years old he has just developed pink sore feet. All 4 are affected, he bites them but stops if I scold him. Have taken him to the vet who gave him a steroid injection and suggested bathing them in Hibbiscrub mixed in water. This is not helping much. I wondered if he is allergic to his food. He has always been a picky eater and I have been feeding him lightly cooked beef mince with grated carrot and broccoli with a little grated cheese on top. Someone has told me you should not feed dogs beef. Do you think it could be his diet?