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.

Human brains still react to chimp voices, hinting at a deep evolutionary link in how we recognize sound.

When confronted with recordings of human voices, 19 species fled instantly, while they were less frightened by lion sounds and other potentially threatening recordings. By Lesley Evans Ogden Panting ...

This article was originally featured on High Country News. The first grainy film clip shows a black bear exploding out of the trail camera’s frame. In another, a mule deer stops munching wildflowers, ...