Raw, not cooked, bones are a necessary part of a raw diet. They are an important source of calcium and provide a plethora of essential vitamins and minerals. In addition, bones are a natural "toothbrush" for your pet's teeth. Dental problems can lead to organ disease, immune system issues and other serious medical conditions. Lastly, bones help dogs and cats express their anal glands by providing the natural roughage found in the diets of carnivores