Livstrong Himalayan Yak Cheese Infused with Blueberry is a 100% natural, long-lasting chew made from an ancient Himalayan recipe in Nepal. Using only 4 ingredients – Yak Milk, Lime, Sea Salt, & Blueberry, it's a perfect chew for all-sized dogs. As the cheese is hardened it becomes lactose-free so it's easy to digest. Livstrong Himalayan Cheese Yak Chews contain no preservatives and are flown in direct from Nepal ensuring freshness. If there is a small piece of the chew left over, simply microwave it for 30 seconds until it puffs up like popcorn, let it cool & feed it back to your furry friend!