all natural, dehydrated, sliced chicken hearts - no fillers or additives. Perfect for Training Treats, Cats or small dogs. Great for Cats and Dogs! The hearts are carefully inspected and trimmed by hand. Made in small batches to ensure quality. Our treats are made with great quality ingredients. Packaged in resealable bags! Chicken hearts are excellent sources of B vitamins, iron and essential fatty acids, keeping your dog's coat silky smooth for cuddle time! It also contains phosphorus, which helps build and strengthen your dog's skeletal system.