I regluarly feed my ones a varity of bones, the larger weight bearing bones of cattle etc, but these i get split down the middle by the butcher, once the marrow and the cartlidge is gone the dogs seem to be done and I throw them out. whole chicken frames, wings the lot, depends on teh size of your dog too, how they eat etc. mine woof most food down but take thier time and chew well with bones. Generally I keep the legs myself anyway.