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.