Natural Nibbles 100% Beef Liver treats are never heat processed or cooked, so they’re packed with protein your dog needs and none of that artificial stuff they don’t (like colors, flavors or preservatives.)  In fact, beef liver is the only ingredient, making Natural Nibbles the natural choice for the health of your pampered pet.  Our pure, 100% beef liver is also packed with vitamins B2, B3, B6, B12 and iron, giving your dog the zip needed to beat you at “Toss the Frisbee” every time.