Cyril Ruoso / Common woolly monkey (Lagothrix lagotricha) sitting on the back of the man in sanctuary, Ikamaperou Sanctuary, Amazon, Peru. October 2006.

Cyril Ruoso / Common woolly monkeys (Lagothrix lagotricha) climbing over keeper in Ikamaperou Sanctuary, Amazon, Peru. October 2006.

Cyril Ruoso / Keeper in treehouse with Common woolly monkey (Lagothrix lagotricha) in Ikamaperou Sanctuary, Amazon, Peru. October 2006.

Cyril Ruoso / Common woolly monkey (Lagothrix lagotricha) Ikamaperou Sanctuary, Amazon Peru.

Cyril Ruoso / Common woolly monkey (Lagothrix lagotricha) Ikamaperou Sanctuary, Amazon Peru.

Cyril Ruoso / Common woolly monkey (Lagothrix lagotricha) Ikamaperou Sanctuary, Amazon Peru.

Cyril Ruoso / Common woolly monkey (Lagothrix lagotricha) Ikamaperou Sanctuary, Amazon Peru.

Cyril Ruoso / Common woolly monkey (Lagothrix lagotricha) sleeping, Ikamaperou Sanctuary, Peru.

Cyril Ruoso / Common woolly monkey (Lagothrix lagotricha) meat for sale in Yurimaguas market, Amazon, Peru. November 2006.

Cyril Ruoso / Humboldt's Woolly Monkey (Lagothrix lagotricha), Pacaya Samiria National Park, Peru

Kevin Schafer / Humboldt's Woolly Monkey (Lagothrix lagotricha), Manu National Park, Peru

Cyril Ruoso / Humboldt's Woolly Monkey (Lagothrix lagothricha) sitting on branch, Icamaperou Sanctuary, Peru