<p>Another relatively safe bone is the raw marrow bone. I get them in the meat section or in the freezer at the grocery store. Keep them frozen. It’s good for about 1/2 hour. The dog will lick, chew the marrow out then grind on the bone for a good length of time. I look for the ones that are about 2 inches “tall” and with very thick bone so the dog isn’t able to splinter off bone sections. They are also very inexpensive, I can usually get 3-4 bones for under $2.00. I generally toss them pretty quickly just because of the splinter issues. I think people use them for soup, but not sure if people actually cook with them or just buy them for dogs. I still can’t believe that people have dogs that have actually eaten authentic Kong toys. Just amazed. I have a champion 80# chewer and not experienced that. We also finally found toys that survive champion chewers. Tuffies’s Pet Toys. I’m not sure if “Tuffys Pet Toys” are the same thing. The two Tuffies’s we have are over a year old and still intact. Good luck OP. I know my mechanic’s lab ate the top off his shifter in his SUV. I did not know labs chewed like that. I thought I had the only destructo breed.</p>