5 Pounds of X-Large Size (5.5oz each on average) Premium Yak Milk Chews. Approximately 15 chews in total. MSRP: $13.99 each. All natural yak milk dog are handmade in the Himalayas with just four simple and pure ingredients - yak milk, cows milk, lime juice and a pinch of salt. Depending on the size and eating habits of the dog, these Yak milk dog chews last a long time and are easily digestible since they are virtually lactose-free.