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Published online 30 September 2005 | Nature | doi:10.1038/news050926-14
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Gorillas branch out into tool use
Wild gorillas seen using walking sticks and plank bridges.
Gorillas have been spotted using tools in the wild for the first time, after decades of observation.
Researchers in the Congolese jungle saw one of the great apes using a branch to test the depth of a pond, and another using the trunk of a small shrub as an improvised bridge.
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