Made from natural hide, so they may vary in size, shape and colour. Ingredients:- rawhide, rice flour. Research shows that daily use of chews can reduce tartar build-up, help keep teeth and gums clean and healthy, and keep breath fresh. And because its natural for a dog to chew, you can be sure your dog will enjoy using these chews much more than a toothbrush. Approx 60 chews.