Yellow Yak hard cheese chews have just one ingredient; cheese! Made from a traditional Himalayan recipe and locally sourced milk these long-lasting chews will last about 7 times longer than a bully stick of the same size and zero waste. Once your dog has chewed down to the last bit soak the end in warm water and microwave for a homemade puffed treat.,Yellow Yak hard cheese chews have just one ingredient; cheese! Made from a traditional Himalayan