Himalayan Dog Chews are a highly nutritious treat made using traditional methods with yak and/or cow milk, and all natural products with no preservatives or binding agents. Depending on the size and eating habits of the dog, this can be a very long-lasting dog chew. Dogs must work the end of the treat for hours, softening it with their mouths before small parts of it can be chewed off. When you give this treat to your dog, you know that you are providing them with hours of high-quality eating entertainment. Completely digestible, they are lactose, gluten and grain free.