Thousands of fans have flocked to a Thailand zoo to celebrate the first birthday of Moo Deng, the baby pygmy hippo that's become a social media sensation.

Moo Deng soared to stardom shortly after she was born, with fans flocking to see her and take photos.

Nation World Fans flock to Thai zoo for Moo Deng's birthday Moo Deng soared to stardom shortly after she was born, with fans flocking to see her and take photos.