Hmm, we have a terrier so pretty tenacious when it comes to chewing and she's never broken a tooth one one, not that she has them often. I don't know if they're cooked or treated some other way to harden/sanitise them but they've been ok for us.
Others might have different experiences.
Our dawg is no great thinker or judge of when to stop (bit of a terrier failing/virtue, depending on your pov!) so if they were fragile, she'd probably expose it! She's not big though so might depend on size.
DDog also has raw bones for tomorrow - sadly not marrow (none of butchers had any) - but lamb, as that's all we could get yesterday.
Hope you and your hound have a merry Christmas whatever bone s/he gets!
It will be complete junk in it...I've never seen one that isn't, but if you're ok with a bit of junk (I figure as my dog's diet is good, he can cope with the odd thing that's awful, a bit like children, lol)
They tend to suck/lick out the filling first, then try to scrape off the last few molecules...that's when they chew the bone bit, so if you give it to him and watch for that it should be fine.
It's a turkey and cranberry one, the ingredients say 'meat and animal derivatives (turkey meal 10%) oils, fats, cereals and cranberry flavour (0.1%)' so yeah it's pretty much utter crap he gets a fairly good diet so the occasional bit of junk like this is equivalent to what a McD's/bag of Haribo etc. would be for us.
I'd scrape the filling out and like you said put it in a kong as those bones can splinter my father's dog had one and it splintered and she ate some of the shards before we realised, lucky that she passed the bits with no problems but she won't be having one again. so I would either chuck it all or scope out the filling and chuck the bone.
Oh don't worry, he's got a very strong constitution, he's eaten all sorts in the 3 years we've had him and the only bout of diarrhoea he's ever had was due to a bug! He even ate an entire box of After Eights (literally, box and wrappers included!!) and didn't even have bad wind
Personally I think there no worse than kongs!!! I've yet to see one that's not pretty thick bone and smooth. I have yet to have one splinter and ours last for ages before they go manky and get chucked away. Personally I refill them with sandwich fillers. These bones have lasted far far better than a kong which has been destroyed within an hr both times my dogs had them!
I have never had a problem with filled bones, my Stafford used to have those huge postman leg roast bones things every Christmas, would last him a month or two. I give roast pox tail tips too though the bones in those are very easily crunched.