The 3" bone is a great size for a wide variety of dogs. You get the best bang for your buck with this natural, healthy marrow bone. Nutritionally, the marrow keeps our dogs' skin and coat healthy and provides vitamins and minerals formulated treats cannot. Oral hygiene can either keep our pets healthy or it can completely compromise their health. Bones scrape the plaque and tarter off the teeth, helping keep those pearly whites clean.