Examples of use of S S O
1. P r o f e s s o r Andrew Whiton, a primate expert at St Andrews University, said: ‘It really is a remarkable set of observations. ‘Gorillas have been studied in the wild for decades and it was noticeable they did not seem predisposed to tool use in the same way as chimpanzees. ‘Using tools in this way, such as a walking stick, is very innovative and indicates intelligence, which fits with what we know about gorillas.‘ The closest relative to humans is the chimpanzee, with whom we shared a common ancestor around six million years ago.