Squirrel Monkey

This image provided by the Virginia Zoo in Norfolk, shows Madonna, a squirrel monkey, with a 6-day-old baby on it's back at the zoo in Norfolk, Va., Friday March 15, 2013. Squirrel monkeys have the proportionately largest brain of all primates, with a brain to body mass ratio of 1-to-17. (AP Photo/The Virginia Zoo)

March 15, 2013 7:00 pm  • 

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