(Balls) Size Matters For Howler Monkey Mating Calls | Video

Thursday, October 22, 2015 - 14:00 in Biology & Nature

A new study of the species Alouatta caraya has revealed that the deeper the vocalization, the smaller the testicals. This also led to the conclusions that howler monkeys with low-pitch vocalization tended to live in single-male groups.

Read the whole article on Live Science

More from Live Science

Latest Science Newsletter

Get the latest and most popular science news articles of the week in your Inbox! It's free!

Check out our next project, Biology.Net