Another new treat, our Bison Liver Bites, are an amazing source of Iron, Copper, & Zinc. These tasty snacks are made with a SINGLE INGREDIENT making them perfect for our limited ingredient pups. Liver is full of A & B Vitamins which is essential for your pups' health. B Vitamins help in the synthesis of proteins and with the metabolism of carbohydrates, turning them from carbs into glucose or energy for your pooch. Vitamin A is necessary for the proper function of your dog's skin, coat, nerves, and muscles.