Once at full size, they can weigh up to 600 pounds. Before Moo Deng, there was Fiona, the baby hippo born in January 2017 at the Cincinnati Zoo. She arrived six months premature at 29 pounds ...

The Cincinnati Zoo and Botanical Garden posted a collection of Fiona the hippo's Christmases over the years, including her opening presents and posing under a painted-on Santa hat. Hippo Holidays ...