This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. Humans have been performing cranial surgery ...

Ancient surgeons may have practiced dangerous skull-opening procedures on cows before operating on people. A previously excavated cow skull from a roughly 5,400- to 5,000-year-old settlement in France ...

Humans have been drilling holes into each others’ heads for thousands of years, and, surprisingly, we’ve actually been pretty good at it, even way back when. A re-analysis of a 5,000-year-old cow’s ...

Now, for the first time, a definite example of cranial surgery has been found in an animal: specifically, a nearly complete cow's skull discovered at a Neolithic site that dates to 3,400 to 3,000 BC.