African Elephant
Experience-led judgement
Older matriarchs were better at distinguishing especially dangerous lion threats and their families mounted more appropriate defensive responses.
When decisions depend on accumulated knowledge, experience can become a leadership asset rather than simply a tenure marker.
Evidence limit + reference
Limit: The experiment demonstrates adaptive animal leadership. It does not prove that older human managers are automatically better leaders.
McComb, K. et al. (2011). Leadership in elephants: the adaptive value of age. Proceedings of the Royal Society B, 278, 3270–3276.