Our supplier says: “In this 10-ounce bag, this firm and crunchy chew is made of sliced USA pig ears that have been dried and baked. There will be variations in the size of each individual sliver. We recommend this chew for small and medium breeds of dogs. When a whole pig ear is too much to eat in one sitting, your dog will get all the flavor and crunch with only a fraction of the calories! Ears are cartilage, which contains collagen.”