I know breeders of working dogs that now have 3 generations of raw fed dogs, I have seen pupies of about 5 weeks eating a turkey carcas. Bones are brilliant for cleanning teeth I have never had to resort to brushing my dogs teeth!!! Nor having their anal glands cleaned thanks to raw meat and bone diet. So unless it's very young go ahead, if the dog is greedy with food pick a bigger bone, the cow bones are hard but keep them amused and they love the marrow.
I've been feeding bones since my dog was six months, but I remove the marrow as it's too rich for her stomach. Her teeth are in great shape, according to my vet.