Our supplier says: “This beef tail measures approximately 6” in length and thickness varies due to this chew being an all-natural product. This beef tail is cartlidge and does contain tiny, soft, boney vertebrae. The tails are slow baked at a low temperature so the vertebrae is broken down to a crunchy treat while the outside has a soft, but tough chew texture. This is a loved chew! We recommend these cow tails for small dog breeds!