Crunchcore™ is a Durable Crunching Bone that won't collapse and has a crunchy sound dogs love. With three durable layers, these toys won't lose shape or collapse. by Petstages is a dog chew toy that contains the natural wood flavour and texture dogs love without the side effects of splintering that real wood brings. A natural bestseller, Dogwood dog chew toys occupy as much as they satisfy and are great for busy chewers and satisfy anxious chewing habits. The best part is they are also lead and phthalate free making chew time for your dog worry-free.