BarknBig gives you the sleek slow-baked Bison Knuckle bone. It carries itself like a true favorite among pet parents. Knuckles seem like they are naturally designed to please dogs. All the edges to work their oral hygiene and all the meaty pieces waiting to be stripped away. Not to mention the incredibly nutrient rich marrow access. Knuckles are not the most dense bones available for super aggressive chewers. Rather they are a softer bone that you can expect to be half the size by the time it is done. Luckily, the bone doesn't fracture - instead, your dog's teeth will "sand" the bone down. With hours of delicious chewing, you can't go wrong purchasing this for just about any dog.