Chimpanzees and orangutans remember distant past events
We humans can remember events in our lives that happened years ago, with those memories often surfacing unexpectedly in response to sensory triggers like flavor or scent. Now, researchers have evidence to suggest that chimpanzees and orangutans have similar capacities. In laboratory tests, both primate species were clearly able to recollect a tool-finding event that they had experienced just four times three years earlier and a singular event from two weeks before, the researchers show.
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