Science of The Day: Research Shows Men Who Catcall Just Have Small Balls

Science is proving what we all expected from the very start.

Obnoxious men who catcall are most likely compensating for something else.

A study published Wednesday finds that monkeys with louder calls used to attract females also tend to have smaller testicles.

The research studied Howler monkeys, the loudest species on the planet with a roar that can be heard three miles away.

"In evolutionary terms, all males strive to have as many offspring as they can, but when it comes to reproduction you can't have everything," lead researcher Jacob Dunn of the University of Cambridge's Division of Biological Anthropology told U.S. News & World Report.

Basically—The louder the howl to attract females, the smaller the balls and less sperm said balls produce.

Science is fun.