Apes regularly get drunk, scientists have found out.
Researchers were shocked to spot wild chimps getting tipsy during a study carried out in Bossou in the west African country of Guinea and quickly realised they were drinking a tipple that is also enjoyed by local villagers.
Behavioural ecologist at Oxford Brookes University in England, Kimberley Hockings, said: "To harvest the palm wine, chimpanzees at Bossou use a leafy tool as a spongy drinking vessel."
The sap averaged approximately 3.1 to 6.9 percent alcohol.
Humans and apes share a genetic mutation that emerged about 10 million years ago that helps them break down alcohol and could have helped them eat overripe and fermenting fruit.