My beagle mix is on a raw meat diet (40% raw meat/raw bones, 40% slightly cooked veggies and 20% overcooked grains) and I give him raw meaty bones all the time. I started him on this diet when he was 6 months with the help of a homeopathic vet. I'm not sure if I'd give him too much at such a young age without first asking a vet...because going from puppy food to his diet took a several weeks of slow modifications to his diet until his system could handle the raw meat/meaty bones. But if you are talking about occasionally giving him a raw bone as a treat I don't think it would hurt.
...and all along I had this "brilliant" idea that giving bones to our dogs will help make their teeth strong...but I am guilty of giving bones to my pet however I only give bones of the leg (pork or beef NOT chicken). the dog is unable to swallow these bones and I assume they use it to sharpen their fangs =D
we live out in the country and he eats small animals anyway, like small rabbits and stuff that happen to cross our front or back pastures. surely bones wont hurt a dog at all because they were born to be predators and use their jaws to crunch bones anyway. right?