Claudio Contreras / Central American spider monkey (Ateles geoffroyi) juveniles hanging by tails and playing, Calakmul Biosphere Reserve, Yucatan Peninsula, Mexico, August

Suzi Eszterhas / Black-handed spider monkey (Ateles geoffroyi), Osa Peninsula, Costa Rica.

Ammonite / Black-handed / Geoffroy's spider monkey (Ateles geoffroyi) feeding on figs, Santa Rosa National Park, Costa Rica.

Claudio Contreras / Central American Spider Monkey (Ateles geoffroyi) in tree, Punta Laguna, Otoch Ma'ax Yetel Kooh Reserve, Yucatan Peninsula, Mexico, October. Endangered species.

Claudio Contreras / Central American Spider Monkey (Ateles geoffroyi) orphan baby hanging from washing line. El Mirador- Rio Azul National Park, Department of Peten, Guatemala.

Claudio Contreras / Central American Spider Monkey (Ateles geoffroyi) juvenile, Punta Laguna, Otoch Ma'ax Yetel Kooh Reserve, Yucatan Peninsula, Mexico, October. Endangered species.

Michael & Patricia Fogden / Geoffroy's Tailless Bat (Anoura geoffroyi) visiting an epiphytic Bromeliad (Vriesia sp) note pollen on head and shoulders, Costa Rica

Rod Williams / Female Geoffroy's cat {Felis geoffroyi}. Rare melanistic form. Captive.

Rod Williams / Male Geoffroy's cat {Felis geoffroyi} sitting on branch. Captive.

Tony Heald / Geoffroy's marmoset on branch

Hanne & Jens Eriksen / Greater sand plover (Charadrius leschenaultii) with open beak, standing on rock. Oman, July.

David Pattyn / Monk Saki (Pithecia monachus) captive with its owner, a boy from the Siona tribe, Cuyabeno wildlife reserve, Sucumbios, Amazon rainforest, Ecuador, July