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

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

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 ...

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

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, 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 ...

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

Thailand’s Khao Kheow Open Zoo celebrated the first birthday of its beloved baby pygmy hippo, Moo Deng, who’s captured hearts ...

Thousands of fans gathered at Thailand's Khao Kheow Open Zoo Thursday to celebrate the first birthday of Moo Deng, the viral baby pygmy hippopotamus.

A zoo in the U.S. state of Kansas has welcomed the birth of a healthy baby pygmy hippopotamus, raising hope for a species ...