At a nature reserve in southeastern Senegal, researchers have spent eight years documenting something that quietly unsettles our oldest assumptions about what it means to be human: chimpanzee mothers deliberately demonstrating tool use and placing implements into the hands of their young, who then practice and learn. The study, published in Frontiers in Psychology, identifies 33 distinct instances of this structured instruction across a range of foraging techniques, revealing that the transmission of complex knowledge through deliberate teaching is not a uniquely human inheritance. In doing so