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

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 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 ...

Is anything cuter than a baby hippo? Fans of Thailand’s Khoa Kheow Open Zoo don’t think so. The zoo recently held a four-day ...

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

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

Moo Deng, the world’s favorite pygmy hippo, just turned 1, and thousands of fans from across the globe traveled to Thailand ...

Learn about how everyone's favorite hippo spent her big day with help from her global fanbase. Who is Moo Deng? In case you missed it, Moo Deng the pygmy hippo became an internet ...

Thousands of excited fans flocked to a Thai zoo on Thursday to celebrate the first birthday of Moo Deng, the adorable baby pygmy hippo that has become a social ...