Smidgin and Company’s Dehydrated Chicken Heart Bites are a great option for dogs with allergies to beef or lamb. Chicken hearts provide lean protein that contains fatty acids and vitamin A along with iron and B vitamins. Because they also contain taurine, chicken hearts are good for your dog’s heart. This tasty, lean protein is naturally low in cholesterol and provides essential nutrients. Chicken hearts are loaded with minerals like phosphorus, iron, copper, magnesium and iodine, and provide the important fat-soluble vitamins A, D, E and K. Organ meat also includes heavy doses of B vitamins such as B1, B2, B6, B12 and folic acid.