Study: Monkeys' Roars Mean Lower Fertility
Though howler monkeys are one of the loudest primates on earth, with throat sacs that help them emit deep, booming roars to attract females, scientists have noted that the most sonorous calls actually come from the males with the smallest testes, which consequently produce less sperm for their potential mates. What do you think?
Frank Torrell
Oh good. Now I can stop trying to guess which howler monkeys at the zoo have the lowest sperm count.
Heirloom Arranger