Hartz Oinkies Pig Skin Mini Twists are all natural, rawhide-free chew treats with a delicious real smoked flavor dogs love. Pig skin is highly digestible and a great source of protein, and makes an excellent alternative to traditional rawhide dog chews. All natural, oven-baked pork skin chews for dogs Real smoked flavor dogs love Highly digestible Excellent alternative to rawhide Ingredients: Pig Skin, Sorbitol, Glycerin.