Howler monkeys are known for their booming calls that can be heard for miles, but the science behind their roar is even more intriguing. Studies show these vocalizations honestly signal body size and ...

WASHINGTON, Oct 22 (Reuters) - The howler monkeys whose guttural calls reverberate through Central and South American rainforests possess a secret that the males of the species may prefer to be left ...

If you lose your sight, you make up for it with other senses. If one arm is amputated, you learn to do twice as many things with the other arm. The balancing act continues, constantly juggling and ...

Quiet on the tee? The howler monkeys weren’t having it. Hidden in the canopy above me, the loudest mammals on the planet were holding forth in full-throated violation of golf etiquette: primates with ...