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 ...

Baby, I'm howlin' for you. Male howler monkeys make deep and boisterous calls to attract mates, but the deepest-pitched songs may come at cost: the size of their testicles. A new study in the journal ...

Yodellers of the world, you never stood a chance: Monkeys will always be better at yodelling than humans because they have a "cheap trick" hidden in their voice box, scientists revealed Thursday. When ...

SALT LAKE CITY, Oct. 22, 2015 - Across the animal kingdom, males hoot and holler to attract females and ward off competing suitors. Now, a new study finds that male howler monkeys with deeper calls ...