One simple ingredient: whole, 100% pure freeze-dried raw Chicken Hearts. Made in the USA Natural, healthy, high-value treat that dogs cannot resist Grain-free, Gluten-Free. Perfect for pets with food sensitivities and limited ingredient diets Dogs naturally crave raw meat much like they ate in the wild. Stella & Chewy's freeze-dried raw Chicken Hearts are the perfect biologically-appropriate addition to any dog's diet Help your dog thrive. Adding any amount of raw to your pet's diet can improve appetite, digestion, provide relief from allergies, aid healthy teeth & gums and provide greater stamina and vitality and a healthy immune system.