Machobear will not be available for stud for another month. I've been feeding raw beef neck bones on the weekend for four years. Last Saturday bear swallowed a huge vertebrate that became lodged in his esophogus. At first the vet inflated the esophogus to try to get it to the stomoch where it would be dissolved. It wouldnt pass. Then he tried to push it down. In the end, The vet had to cut him open, cut his stomoch open to dislodge the bone from his esophogus. I thought I was going to lose him there for a minute. However, after a week, he's eating well and back to his normal spirits.