Purus river red howler monkey (<i>Alouatta puruensis</i>) in Tambopata Research Center, Peru, Amazon basin.
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/birdbrian/">Brian Ralphs</a>
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/birdbrian/4428380347/">Flickr</a>