The Hartz Oinkies Chickentastic Hearty Twists Natural Chew Dog Treats are a su-paw tasty way to support your furbaby’s dental health through chewing. They are made with layers of naturally good, real ingredients. A pork core is wrapped with real chicken breast and sweet potato for irresistible flavor. Since they’re made without any beef hide or rawhide, these chews are highly digestible. The pork core is a natural source of collagen, while sweet potato is a natural source of fiber. The treats are smoked and oven-baked to lock in all that deliciousness.