Ecuador 23-521
Photograph by Bruce B. Junek

Sakis are medium-sized monkeys who do not have prehensile tails (they can't grasp branches by hanging from their tails).

Monk Sakis weigh about five pounds and eat fruit, seeds, leaves and ants.

They are very shy and quiet, and only make low-pitched whines and grunts when calling, and little chirps when they are happy.

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