Livstrong Himalayan Yak Cheese is a 100% natural, long lasting chew made from an ancient Himalayan recipe in Nepal. Using only 3 ingredients - Yak Milk, Lime, and Salt, it is 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. When 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 and feed it back to your furry friend!