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7 primates with expressive faces

By: Laura Moss on Aug. 22, 2012, 6:30 p.m.
titi monkey

Photo: AFP/Getty Images

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Monkey amazement

A baby titi monkey at the zoo in Rio de Janeiro in Brazil stares up with a look of awe on his face. The monkey is part of the zoo's new animal nursery that treats native endangered species that were abandoned by their parents.