That means Fiona, Bibi’s daughter, is officially a big sister. Fiona became an international celebrity after being born six weeks prematurely in 2017, weighing in at only 29 pounds at birth.

Fiona the baby hippo has inspired a children's book. Adding to the complexities of Fiona's care is the fact that it has all been done in the public eye.

The wait is over! Bibi has given birth to a second hippo calf, making Fiona a big sister. The Cincinnati Zoo says a healthy full term hippo baby was born around 9:40 p.m. Wednesday.

As Hurricane Fiona hit Puerto Rico on Sept. 18, Dr. Zaskia Rodriguez made a perilous trip to the hospital to deliver a baby.