Nature's Diet single source protein treats have 1 raw meat or seafood ingredient. Dog choices are: Beef Heart, Turkey, Lamb Liver, Chicken Breast or Salmon. Choices for cats are: Slamon, Whitefish, and Chicken Breast. Pure, natural deliciousness for your dog or cat. Freeze dried meat and seafood retains all the flavor and nutrition of fresh meat without the need for messy prep or spoilage concerns.