Totally unfazed that it was her birthday, she wandered around her enclosure, took a few naps and chewed her caretaker’s knees while she was hosed down.

Thousands gathered at Khao Kheow Open Zoo to celebrate Moo Deng, a baby pygmy hippo and social media phenomenon, on her first birthday. The zoo organized four days of festivities, attracting international fans and raising funds for animal conservation.

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