August 23, 2012
Updated Aug 23, 2012 at 6:35 AM PDT
The animals at Lincoln Park Zoo in Chicago have a new roommate.
It weighs only a few ounces and you may have to look closely to get a glimpse of the newborn.
The Bolivian Gray Titi monkey was born on Saturday and spends most of its time nestled in the fur of its mother.
Titi monkeys are native to South America.
It's not yet clear if the baby is a boy or girl.
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