Wheat Corn Soy Grain Gluten and Glycerin-free Pig Ears have the flavor dogs crave. Made from the finest quality free-range pig available. 100% natural Pig's Ears dog chew treats contain no additives or preservatives. Chewing these helps maintain pet's dental health by removing tartar and massaging dog's gums. Cleans teeth and gums and satisfies desire to chew. Pure Piggy chews also provides dogs with hours of enjoyment!