dog skull dates back 33,000 years

An ancient dog skull, preserved in a cave in the Altai Mountains of Siberia for 33,000 years, presents some of the oldest known evidence of dog domestication.  The Altai Mountain skull is extraordinarily well preserved, enabling scientists to make multiple measurements of the skull, teeth and mandibles that might not be possible on less well-preserved remains. "The argument that it is domesticated is pretty solid, What's interesting is that it doesn't appear to be an ancestor of modern dogs."

      The researchers use a machine called an accelerator mass spectrometer to measure the amount of radioactive carbon remaining in a sample.  so hopefully, they will be able to observe it in more ways.