Do Monkeys Eat Fermented Fruit?
Some wild primates eat overripe or naturally fermented fruit that contains low levels of ethanol. Species such as chimpanzees, bonobos, and certain monkeys are documented consuming fruit that has begun to ferment on the ground or tree.
How Fermentation Affects Fruit
When fruit ripens and bruises, wild yeast converts sugars into ethanol and carbon dioxide. The resulting alcohol content is usually low, often below one percent, but repeated access can lead to repeated exposure for primates.
Observed Effects on Monkey Behavior
Researchers have recorded changes in behavior after monkeys consume fermented fruit, including unsteady movement, vocalizations, and reduced caution. Studies on primates in the wild and in managed settings help scientists compare these reactions with broader animal physiology.
For more on animal responses to alcohol, see National Geographic Animals and Alcohol.
