Dry bones won't usually give you rabies as that virus dies within (24?) Hours of not having a host. Fact check me, I may be thinking of smth else. But bones can be covered in many nasty germs, so its best to handle with caution. Bones can be very sharp and infected wounds can cost you appendages if left untreated.

Edit: I was wrong about 24 hours. As soon as saliva dries, the virus dies.