The Khao Kheow Open Zoo was overrun with Moo Deng fans on the first of four days of activities marking the hippo’s birthday.

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

A male pygmy hippo – the same species as Thailand's viral Moo Deng – was born at Tanganyika Wildlife Park in Goddard, Kansas ...

Moo Deng, the pygmy hippo who took the internet by storm, celebrated her first birthday Thursday at the Khao Kheow Open Zoo ...

Thailand's viral sensation pygmy hippo, Moo Deng, celebrated her first birthday with a four-day bash.

A birthday bash fit for a queen — or at least a very cute hippo.

Moo Deng, the famous pygmy hippo, turned one at Khao Kheow Open Zoo in Thailand. The celebration featured a 20-kilogram cake.

Thousands of excited fans flocked to a Thai zoo on Thursday to celebrate the first birthday of Moo Deng, the adorable baby ...

Zoo Director Narongwit Chodchoy C hodchoy, right, and Molly Swindall, a visitor from New York, prepare food for baby hippo ...

Moo Deng, the famous pygmy hippo, turned one at Khao Kheow Open Zoo in Thailand. The celebration featured a 20-kilogram cake. Thousands of fans watched her eat watermelon and vegetables on her ...