Published today in Proceedings of the Royal Society B, the study found that while the baboons noticed and responded to a laser mark shone on their arms, legs and hands, they did not react when they saw, via their mirror reflection, the laser on their faces and ears. It was the first time a controlled laser mark test has been done on these animals in a wild setting and strengthens the evidence from other studies that monkeys don’t recognise their own reflection. The researchers observed 120