These Daro mini bone dog chews are made of natural, premium-quality rawhide for a delicious taste and will satisfy your dog's chewing needs. They are naturally fortified with vitamins and minerals making them much more nutritious than ordinary bones. These have no chemicals, no preservatives, no additives, no enhancers, no fillers, hormone-free, and gluten-free and have various health benefits. Effective in preventing plaque build-up as they are a natural teeth cleaner while promoting healthy teeth and gums. These are a great way to reward and treat your pooch in training games.