Woolly Monkey, PeruHere’s another look at the very friendly woolly monkey I met in the rainforest of Peru’s upper Amazon basin. In this image, you can sort of see the leather padding on the underside of tail tip — essentially a third arm as the monkey moves effortlessly through the forest. Nikon D500 with Nikkor 500mm PF lens, ISO 800, f/5.6 at 1/100th of a second.