Belly Bones are made with yogurt flavoring as well as prebiotic and probiotic. Naturals Dental Care Chewy potato and rice formula. Unique design and chewy texture cleans dogs' teeth as they chew and helps freshen breath. These bones are pressure molded not baked. They taste great, are healthy and safely digest, unlike rawhide that have a risk of blockage. Please always supervise your pets so they do not gulp our treats without chewing them first. Proper size of treats depending on breed is recommended. Large = 5-3/8", Small = 3-3/4", Mini 3-1/4"