Moo Deng isn’t the only viral zoo star! Discover other adorable animals like Pesto the penguin, Rocky the orangutan, and Fiona the hippo who are capturing hearts worldwide with their unique charm and lovable antics.

Some of the most popular and recirculated clips of Moo Deng feature her stomping about, nipping her handler, wriggling and fighting her bath time and traipsing around with her mou

The zoo defended its care for Moo Deng, arguing the baby hippo receives the best possible care and is part of a conservation programme Thailand has dismissed as outdated, animal rights group Peta's accusations that an internet-famous female baby pygmy hippo "faces a lifetime of confinement" at a local zoo cashing in on the mammal's stardom.

Moo Deng is biting back at fame. The viral pigmy hippo has racked up millions of views online from adoring fans who can’t get over her cuteness — but in real life, she’s been a naughty girl. A late September video shot inside months-old Moo Deng’s enclosure within Thailand’s Chonburi zoo showed the feisty female coming at her caretaker,