Hartz Oinkies Smoked Pig Skin Twist Wrapped with Real Chicken Dog Treats, 16 count, bundle of 2; Dogs will go crazy for the Hartz Oinkies Wrapped with Real Chicken Dog Treats. These twisty sticks are handmade from all-natural pig skin wrapped in mouth-watering chicken breast, which is something your deserving dog will surely appreciate. And because they’re totally free from rawhide and highly digestible, it’s a great alternative to satisfy their chewing instincts. But wait, because there’s more! The unique texture is great for dental health, so you can enjoy fresher breath when he goes in for that big, wet kiss—which is practically guaranteed to happen when you reward him with one of these.