After watching video demonstrations chimps build their own tools.
The animals were shown footage of a trained chimp combining two components to construct a tool that enabled it to reach a food reward.
When given the same two components, the chimps made their own tools and used them to drag over a tasty treat.
The chimps were then placed into 5 groups during the test each shown progressively less information with one group just shown the chimp eating the grape.
The set-up was then re-created for the groups to interact with.
Click here to see how they did and to read more about this study.
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