100% natural and edible Lamb Horn Marrow Chip Dog Treats are single ingredient and contain no additives, preservatives or supplements. They come only from the pure lands of Iceland and are ethically harvested as part of the local food source of Icelanders. Not only are they delicious for your dog, they reduce tartar and plaque build-up for healthier gums and teeth. They are also a great natural source of calcium that promotes strong bones and healthy hair for your pet. These natural and edible lamb products offer peace of mind, as they are cleaned and air-dried within FDA, USDA, EU, and MAST standards and regulations.