BLUE Wilderness Wild Bones Medium Dental Chews are the 100% grain-free treat made to satisfy the spirit of the wolf that lives in every dog. Plus, they will help clean your dog's teeth as well as freshen his breath. Made with only the finest natural ingredients, Wild Bones dental chews are free from both grains and glutens. Like all BLUE Wilderness treats, Wild Bones contain no artificial colors, flavors or preservatives so your dog can satisfy his primitive instincts the way nature intended. They provide 100% chewing pleasure for dogs 25 - 50 lbs.