CHONBURI, Thailand — Thousands of excited fans flocked to a Thai zoo on Thursday to celebrate the first birthday of Moo Deng, the adorable baby pygmy hippo that has become a social media sensation.

The baby hippo, who doesn't yet have a name, was born to parents Pluto and Posie. Both arrived to Tanganyika Wildlife Park in 2014 and have had five calves together, including the latest addition.