[left] David De Lossy/Getty Images; [right] Marcos del Mazo/Contributor/Getty Images
- A new study showed that mammals in the savanna are more scared of human voices than lions growls.
- The scientists discovered this by playing sounds from humans, lions, and birds from hidden speakers.
- While this finding is "depressing," it could be used to help protect poached species.
Lions, sometimes considered the king of all beasts, aren't the scariest things on the savanna. Humans are.