A male black and white Colobus monkey named Simon was born recently at the Saint Louis Zoo's Primate House in Missouri.

"A new infant is always the focus of so much excitement and attention for the family," Joe Knobbe, Zoological Manager of Primates at the Saint Louis Zoo, told Zoo Borns. "It's important for everyone to have a role in the care of the newborn. Older sister Kivuli has taken particular interest in her new baby brother and is often seen holding or even carrying him. She's learning important skills that will help her become a great mother, too, someday."

The baby Colobus monkey and his sister, Kivuli, are cared for by their mother, Cecelia, 16.

Learn more about the newest baby Colobus monkey at the Saint Louis Zoo in this short video: