Mark Bowler / Dusky titi monkey {Callicebus moloch} feeding on rainforest fruits, Yavari River, Amazon, Peru

Thomas Marent / Coppery Titi (Callicebus cupreus) mother carrying young, native to Brazil

Rod Williams / Red / Coppery Titi monkey (Callicebus cupreus) head portrait climbing down tree trunk. Captive, found in Brazil and Peru.

Lisa Hoffner / Red howler monkey (Alouatta seniculus) with baby on back, in the dry tropical forest of Colombia, South America.

Murray Cooper / Coppery Titi (Callicebus cupreus) monkey in canopy, Ecuador

Murray Cooper / Coppery Titi (Callicebus cupreus) monkey in canopy, Ecuador

Rod Williams / Coppery / Red Titi monkey (Callicebus cupreus) pair grooming, captive from Brazil and Peru

Mark Bowler / Red / Coppery Titi Monkey {Callicebus cupreus} captive, from Brazil, Colombia, Ecuador and Peru

Thomas Marent / Coppery Titi (Callicebus cupreus) monkey, Amacayacu National Park, Colombia

Rod Williams / Male Red titi monkey (Callicebus cupreus) carrying baby, Captive, found in Brazil/Peru

Rod Williams / Red Titi monkey (Callicebus cupreus) captive, from Brazil and Peru

Rod Williams / Red Titi monkey {Callicebus cupreus} captive