In Nepal, this chew comes from an ancient recipe that is used by the locals to create a long-lasting snack that they can slowly work in their mouths while they are working in the fields. The only ingredients are Yak and Cow Milk, Salt and Lime Juice. Dogs must work the end of the treat for hours, softening it with their mouths before small parts of it can be slowly scraped off. It is 100% natural with no preservatives. It is an authentic type of cheese eaten by the people of the Himalayas. When you give this chew to your dog, you know that you are providing them with hours of high quality eating entertainment.