Dave Watts / Colombian spider monkey (Ateles fusciceps rufiventris) grooming another, captive. Critically endangered species.

Dave Watts / Colombian spider monkeys (Ateles fusciceps rufiventris) embracing each other, captive. Critically endangered species.

Edwin Giesbers / Brown headed spider monkey (Ateles fusciceps) calling. Captive, occurs in Central and South America.

Edwin Giesbers / Brown headed spider monkey (Ateles fusciceps) captive, occurs in Central and South America.

Edwin Giesbers / Brown headed spider monkey (Ateles fusciceps) captive, occurs in Central and South America.

Roland Seitre / Colombian Spider Monkey (Ateles fusciceps rufiventris) mother with baby caged in zoo. Native to Colombia and Panama.

Juan Carlos Munoz / Black-headed spider monkey (Ateles fusciceps) portrait, captive, Apenheul Park, Netherlands.

Eric Baccega / Group of Colombian Black Spider monkeys (Ateles fusciceps robustus) resting in a heap, captive, a vulnerable species native to Colombia and Panama

Eric Baccega / Group of Colombian black spider monkeys {Ateles fusciceps robustus} huddled together, sleeping on grass, captive.

Eric Baccega / Group of Colombian black spider monkies {Ateles fusciceps robustus} resting, captive.

Anup Shah / Spider monkey {Ateles fusciceps robustus} captive

Anup Shah / Spider monkey holding baby {Ateles fusciceps robustus} - captive