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.

Thomas Marent / Black-handed Spider Monkey (Ateles geoffroyi) using prehensile tail, Belize

Ingo Arndt / Black-handed Spider Monkey (Ateles geoffroyi) hanging by its prehensil tail in forest canopy, Santa Rosa National Park, Costa Rica

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

Roland Seitre / Black-handed Spider Monkey (Ateles geoffroyi) walking across branch with curled tail. These monkeys have been captively bred and are being prepared for release into their natural forest habitat. Zoo A...

Roland Seitre / Black-handed Spider Monkey (Ateles geoffroyi) mother resting with baby on back. These monkeys have been captively bred and are being prepared for release into their natural forest habitat. Zoo Ave, Sa...

Roland Seitre / Black-handed Spider Monkey (Ateles geoffroyi) mother climbing with baby on back. These monkeys have been captively bred and are being prepared for release into their natural forest habitat. Zoo Ave, S...

Roland Seitre / Black-handed Spider Monkeys (Ateles geoffroyi) climbing around feeding barrel. These monkeys have been captively bred and are being prepared for release into their natural forest habitat. Zoo Ave, San...

Roland Seitre / Black-handed Spider Monkey (Ateles geoffroyi) hanging from ropes. These monkeys have been captively bred and are being prepared for release into their natural forest habitat. Zoo Ave, San Jose, Costa...

Roland Seitre / Black-handed Spider Monkey (Ateles geoffroyi) hanging from ropes. These monkeys have been captively bred and are being prepared for release into their natural forest habitat. Zoo Ave, San Jose, Costa...

Roland Seitre / Black-handed Spider Monkey (Ateles geoffroyi) hanging from ropes. These monkeys have been captively bred and are being prepared for release into their natural forest habitat. Zoo Ave, San Jose, Costa...

Roland Seitre / Black-handed Spider Monkey (Ateles geoffroyi) hanging from ropes. These monkeys have been captively bred and are being prepared for release into their natural forest habitat. Zoo Ave, San Jose, Costa...

Roland Seitre / Black-handed Spider Monkey (Ateles geoffroyi) hanging from branches. These monkeys have been captive bred and are being prepared for release into their natural forest habitat. Zoo Ave, San Jose, Costa...

Pete Oxford / Central American Spider Monkey (Ateles geoffroyi yucatanensis) in foliage. Coba Monkey Reserve, Yucatan Peninsula, Mexico.

Pete Oxford / Central American Spider Monkey (Ateles geoffroyi yucatanensis) in canopy. Yucatan Peninsula, Mexico.

Kevin Schafer / Young Yucatan Black-handed Spider Monkey (Ateles geoffroyi yucatanensis) swinging from a branch. Calakmul Biosphere Reserve, Mexico.

Kevin Schafer / Yucatan Spider Monkey (Ateles geoffroyi yucatanensis) in tree canopy, Calakmul Biosphere Reserve, Mexico, Endangered species

David Tipling / Central American / Black handed spider monkey {Ateles geoffroyi} in forest, Tikal, Guatemala

David Tipling / Central American / Black handed spider monkey {Ateles geoffroyi} in forest, Tikal, Guatemala

Kevin Schafer / Black-handed Spider Monkey (Ateles geoffroyi) hanging in the trees, Calakmul Biosphere Reserve, Mexico

Edwin Giesbers / Silhouette of Black-handed spider monkey (Ateles geoffroyi) standing in tree, Costa Rica

Ingo Arndt / Black-handed Spider Monkey (Ateles geoffroyi) jumping from tree to tree, Santa Rosa National Park, Costa Rica

Rod Williams / Black handed spider monkey (Ateles geoffroyi) in tree, captive

Shattil & Rozinski / Black handed spider monkey {Ateles geoffroyi} hanging in tree from tail, Captive, Belize Zoo

Shattil & Rozinski / Black handed spider monkey {Ateles geoffroyi} hanging in tree, Captive, Belize Zoo

TIM MARTIN / Black Handed Spider Monkey calling from tree tops (Ateles geoffroyi) Costa Rica

Rod Williams / Black handed spider monkey {Ateles geoffroyi} captive, from Central America

Rod Williams / Black handed / Geoffroy's spider monkey {Ateles geoffroyi} juvenile calling, captive, from Central America

Rod Williams / Black handed / Geoffroy's spider monkey {Ateles geoffroyi} male, captive, from Central America

Flip de Nooyer / Black-handed Spider Monkey (Ateles geoffroyi) hanging by prehensile tail, Guyana

Gerry Ellis / Black-handed Spider Monkey (Ateles geoffroyi) in tree eating Lobster Claw blossoms, Costa Rica

Gerry Ellis / Black-handed Spider Monkey (Ateles geoffroyi) in tree eating Lobster Claw blossoms, Costa Rica

Gerry Ellis / Black-handed Spider Monkey (Ateles geoffroyi) mother with baby in tree, Costa Rica

Gerry Ellis / Black-handed Spider Monkey (Ateles geoffroyi), Belize

Michael & Patricia Fogden / Black-handed Spider Monkey (Ateles geoffroyi) group in rainforest, Panama

Michael & Patricia Fogden / Black-handed Spider Monkey (Ateles geoffroyi) group in rainforest, Panama

Christian Ziegler / Black-handed Spider Monkey (Ateles geoffroyi) mother and young, Barro Colorado Island, Panama

Ingo Arndt / Black-handed Spider Monkey (Ateles geoffroyi) hanging by its prehensile tail in forest canopy, Santa Rosa National Park, Costa Rica