2 ms·The Louder the Monkey, the Smaller Its Balls, Study Finds4 points by CharlesW 1y agognabgib 1y ago(2015) [Evolutionary Trade-Off between Vocal Tract and Testes Dimensions in Howler Monkeys](https://www.cell.com/current-biology/fulltext/S0960-9822(15)01109-4 https://www.cell.com/current-biology/fulltext/S0960-9822(15)...)yawpitch 1y agoAhh, well that explains a lot about America.