i am careful with bones. felix got a lot of bones where he was before he came to me, and his teeth were very worn down. also i fear the condition, which in german is called 'bone stool', (i don't know the english term), where the stool is all white and very hard, sometimes so hard the dog can't pass is and must be operated.
the girls get ribs form young animals, which they eat in no time at all, og 'soft' bones like breatsbones of veal, lab's necks or tails of veal.
sometimes the occasional chicken carcass, without the legs. only i think chicken is rather inferior food, from a nutrition point of view. at least in dk most chickens live in big farms, never coming outside, never seing the sun, and being fed to become as big as possible in the shortest possible time. i am not sure, that there is a lot of nutritional value in them.
the theory that eating bones keeps dogs' teeth clean and healthy is just that. a theory. bella and sienna need to have their teeth brushed regularly, bones or no bones.
to make sure they get sufficient calcium, also to neutralize the phosphor in their meat i add a clacium supplement ot their daily food.