Yeti Dog Chews are an all-natural long lasting dog treat made from fresh yak milk, cow milk and lime juice. This hard cheese is made using centuries old recipe by the people of the Himalayas. A grate alternative to traditional chews, it is non-staining, has a minimal odor. When the chew becomes too small for the dog to chew, it can be microwaved for 60 seconds to become a tasty puff treat.