Orangutans instinctively use hammers to strike and sharp stones to cut – study

Orangutans instinctively use hammers to strike and sharp stones to cut – study (Plos One)

Orangutans instinctively use hammers to strike and sharp stones to cut, a study has found.

According to the researchers, the findings suggest that two major prerequisites for the emergence of stone tool use – striking with stone hammers and recognising sharp stones as cutting tools – may have existed in our last common ancestor with orangutans, 13 million years ago.