Home Humor Amazing Howler Monkey Facts (this is nuts) Humor Amazing Howler Monkey Facts (this is nuts) February 14, 2018 1513 0 Share on Facebook Tweet on Twitter Howler monkeys are the loudest of all monkeys. They call to let others know where their territory is, alerting them to stay away. The calls sound like a loud whooping bark or roar. Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related Comments comments LEAVE A REPLY Cancel reply Notify me of follow-up comments by email. Notify me of new posts by email.