In 2022, Johns Hopkins researchers discovered that bonobos and chimpanzees can remember old companions; 26 years after separation, Louise still favored her sister’s face |
Composite image of chimpanzee (left) and bonobo (right). Credits – Wikimedia Commons A bonobo named Louise at a sanctuary in Japan helped document the longest-lasting social memory recorded outside our species. When shown a photograph of her sister Loretta, whom she had not seen in more than 26 years, Louise stared intently at the familiar…
