Editing Gorilla (section)

===Tool use===
{{further|Tool use by animals#Gorillas}}
The following observations were made by a team led by Thomas Breuer of the [[Wildlife Conservation Society]] in September 2005. Gorillas are now known to use tools in the wild. A female gorilla in the [[Nouabalé-Ndoki National Park]] in the [[Republic of Congo]] was recorded using a stick as if to gauge the depth of water whilst crossing a swamp. A second female was seen using a tree stump as a bridge and also as a support whilst fishing in the swamp. This means all of the [[great ape]]s are now known to use tools.<ref>{{Cite journal |last1=Breuer |first1=T. |last2=Ndoundou-Hockemba |first2=M. |last3=Fishlock |first3=V. |title=First observation of tool use in wild gorillas |journal=PLOS Biology |year=2005 |pages=e380 |volume=3 |issue=11 |pmid=16187795 |doi=10.1371/journal.pbio.0030380 |pmc=1236726 |doi-access=free }}</ref>

In September 2005, a two-and-a-half-year-old gorilla in the [[Republic of Congo]] was discovered using rocks to smash open palm nuts inside a game sanctuary.<ref name=ns>{{cite web |url=https://www.cbsnews.com/news/a-tough-nut-to-crack-for-evolution/ |date=2005-10-18 |title=A tough nut to crack for evolution |work=CBS News Online |access-date=18 October 2006 |url-status=live |archive-url=https://web.archive.org/web/20061114041612/http://www.cbsnews.com/stories/2005/10/18/tech/main951800.shtml |archive-date=14 November 2006}}</ref> While this was the first such observation for a gorilla, over 40 years previously, chimpanzees had been seen using tools in the wild 'fishing' for termites. Nonhuman great apes are endowed with semiprecision grips, and have been able to use both simple tools and even weapons, such as improvising a club from a convenient fallen branch.