Already have the Mighty Chewz Bully Bone Holder? Our Yak Chew Refill Pack gives you more of what your dog loves—without the need for another holder. Each refill includes 4 All-Natural Yak Cheese Chews, handcrafted in Nepal and pre-drilled to fit perfectly with the Bully Bone holder for safe chewing. Made from just Yak Milk, Lime, and a pinch of Salt, these chews follow a traditional Himalayan recipe and deliver a long-lasting, satisfying chew experience your dog will crave. Naturally hard, rich in protein, and fully digestible, they're a smart, healthy choice for strong chewers. Available in Small, Medium, Large, and XL, so you can match the perfect size to your pup and your existing Bully Bone holder.