Plenty of families enjoyed the Lehigh Valley Zoo, and many of these families had something in common.

St. Luke's held it's first NICU at the Zoo Saturday.

Families whose newborns spent time in the hospital's Neonatal Intensive Care Unit were invited to the zoo as were workers from the unit.

Organizers said families and care-givers develop a strong bond during the time infants are in the unit, so this event gives them a chance to reconnect.