Hartz Rawhide & Pig Skin 6 Retrievers, Natural, 9 Inch 6 Retrievers Total [ 3 packs each has 2] Unique combination of rawhide and pig skin. The addition of pig skin entices dogs to chew longer aiding in the removal of tarter and plaque. Long lasting chew. Satisfies your dog's instinctive urge to chew , which reduces plaque and tartar. Ideal for active, aggressive chewers. Unbasted - all natural - no preservatives