Humans don’t just recognize each other’s voices—our brains also light up for the calls of chimpanzees, hinting at ancient communication roots shared with our closest primate relatives. Researchers ...

Researchers found that the predatory canines were far more likely to flee recordings of human voices than they were to run away from other sounds. By Lesley Evans Ogden Lesley Evans Ogden previously ...

Researchers exposed pumas in the Santa Cruz mountains to the sound of human voices to see if they would react with fear and flee, and the results were striking: They were definitely afraid of humans.