A male emperor tamarin (Saguinus imperator) carries a four-week-old infant at Schoenbrunn Zoo in Vienna, Austria, May 29, 2015. The infant was born at the zoo on April 26 and measures some 5 cm (2 inches) without its tail. REUTERS/Heinz-Peter Bader

An male emperor tamarin (Saguinus imperator) carries a four-week-old infant at Schoenbrunn Zoo in Vienna, Austria, May 29, 2015. The infant was born at the zoo on April 26 and measures some 5 cm (2 inches) without its tail. REUTERS/Heinz-Peter Bader TPX IMAGES OF THE DAY

An Emperor Tamarin monkey is seen at the Manu Biosphere Reserve in Peru's southern Amazon region of Madre de Dios November 3, 2009. This 1.8 million hectares reserve is the home of 600 birds species and 11 monkey species among other animals, as caymans and mammals, and has one of the highest levels of biodiversity of any park in the world with more than 200 varieties of trees found in one hectare. Picture taken November 3, 2009. REUTERS/Enrique Castro-Mendivil (PERU ENVIRONMENT TRAVEL ANIMALS)

An Emperor Tamarin monkey is seen at the Manu Biosphere Reserve in Peru's southern Amazon region of Madre de Dios November 3, 2009. This 1.8 million hectares reserve is the home of 600 birds species and 11 monkey species among other animals, as caymans and mammals, and has one of the highest levels of biodiversity of any park in the world with more than 200 varieties of trees found in one hectare. Picture taken November 3, 2009. REUTERS/Enrique Castro-Mendivil (PERU ENVIRONMENT TRAVEL ANIMALS)

An Emperor tamarin, also known as the Saguinus imperator, climbs on a tree inside an enclosure at the Faunia animal theme park in Madrid April 27, 2005. Emperor tamarins live in tropical forests of Brazil, Peru and Bolivia and feed on fruits, insects, flowers, and nectar. REUTERS/Victor Fraile PP05040250 VF/DY

New South Wales Environment Minister Pam Allan feeds a mischievous squirrel monkey live worms at the opening of a new exhibit at Sydney's Taronga Zoo December 16. The new "Amazonia" is the home for four South American species, a Cotton Top Tamarins, two Emperor Tamarins, six Squirrel Monkeys and two alligators viewed through thin steel cables that are almost invisible against the water which enables visitors to get right up close the animals.
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A mischievous squirrel monkey crawls across the face of two-year-old Sidonie Allan at the opening of a new exhibit at Sydney's Taronga Zoo December 16. The new "Amazonia" is the home for four South American species, a Cotton Top Tamarins, two Emperor Tamarins, six Squirrel Monkeys and two alligators viewed through thin steel cables that are almost invisible against the water which enables visitors to get right up close the animals.
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A mischievous squirrel monkey crawls across the face of two-year-old Sidonie Allan at the opening of a new exhibit at Sydney's Taronga Zoo December 16. The new "Amazonia" is the home for four South American species, a Cotton Top Tamarins, two Emperor Tamarins, six Squirrel Monkeys and two alligators viewed through thin steel cables that are almost invisible against the water which enables visitors to get right up close the animals.

MDB/DL/

New South Wales Environment Minister Pam Allan feeds a mischievous squirrel monkey live worms at the opening of a new exhibit at Sydney's Taronga Zoo December 16. The new "Amazonia" is the home for four South American species, a Cotton Top Tamarins, two Emperor Tamarins, six Squirrel Monkeys and two alligators viewed through thin steel cables that are almost invisible against the water which enables visitors to get right up close the animals.

MDB/JO/