Move over dolphins. Chimps and bonobos can recognize long-lost friends and family — for decades

[phkrause]

Extensive social memory had previously been documented only in dolphins and up to 20 years. "What we're showing here," said UC Berkeley researcher Laura Simone Lewis, "is that chimps and bonobos may be able to remember that long — or longer."

https://news.berkeley.edu/2023/12/18/move-over-dolphins-chimps-and-bonobos-can-recognize-long-lost-friends-and-family-for-decades?