The Original Himalayan Dog Chew is a very long-lasting dog chew. Himalayan Dog Chews are made by boiling yak and cow milk and then drying for several weeks to create a hard chew. 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. Extra-large size is one piece about 7" long and 2" wide. Packaged by weight.