My Vet also said the same comment as Jakeyjake...he specializes in dental dog care and sees a lot of dogs coming into his office with fractured teeth due to the antlers, beef, pork bones etc... He had to do a root canal on one of his dogs which ended in big $$ from chewing on antlers...we do give Petey antlers but will probably not buy anymore for him, we can tell he just grinds away at them and you can hear the severity in his chewing. We tried giving him a bully stick, which we use to give to our Pug, but for Petey and having such strong jaws he chewed it up and swallowed it whole to a point where half of it was down his throat and the other half was still in his mouth. Bully sticks ended quite quickly and we don't give it to him anymore because of that incident. We do brush his teeth before his bed time every night...we might try the nyla bones which our Vet suggested and see how that goes.