Mikeliban, M.; Kunz, B.; Rahmaeti, T.; Uomini, N.; Schuppli, C.: Orangutan mothers adjust their behaviour during food solicitations in a way that likely facilitates feeding skill acquisition in their offspring. Scientific Reports 11, 23679 (2021)
Scientists studying a rare population of tool-using chimpanzees have found that aging can have a profound impact on their abilities—but not all chimps decline equally.