The Cincinnati Zoo’s popular hippo Fiona enjoyed a cake at her sixth birthday celebration on Tuesday, January 24.Fiona became an “internet sensation” as the zoo shared her story when she was born six weeks premature.This video livestreamed by the Cincinnati Zoo shows Fiona, the birthday girl, exploring her cake made of a variety of produce as a crowd sang her ‘Happy Birthday.’Fiona was joined by her mom, Bibi, and her six-month-old brother, Fritz, with whom she shared her cake. Credit: Cincinnati Zoo via Storyful