I feed my dogs chicken necks, wings and frames which they are able to eat completely as they are soft.
They also get osso bucco which is just the shin bone of either veal or beef. They eat the meat off this then lick the marrow out of the centre of the bone. The bone is too hard for them to chew through.
When i cut up y-bone or t-bone at work the first cut and last cut i take off i keep for my dogs. They can eat most of the bone of these but some of it seems a bit hard for them.
I some times feed brisket bones but only the soft ones that come from the outside of the rib cage as as they get closer to the spine they get harder and i find they splinter.
I don't feed lamb ribs or pork ribs because i find they splinter too.
I feed them a beef neck bone at every meal but they are a very tough bone and i get them cut about 3 inches long so they can't swallow them.They pick as much meat off them as they can and keeps them amused for quite a while but they don't eat them completely.
I do however always sit outside with my dogs while they're eating their meal as i enjoy the time to relax and i can keep an eye on them so they don't choke on anything.
If you think dogs can't count, try putting three dog biscuits in your pocket and then giving Fido only two of them. ~Phil Pastoret