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

Activist Tommy Garnett's decades of work paid off when Sierra Leone's Tiwai island -- a lush forest home to one of the world's highest concentrations of primates -- landed a spot Sunday on the UN ...

Adoring fans from around the world converged in Thailand this week to celebrate the first birthday of Moo Deng, the baby pygmy hippo who became a social media sensation. John Yang reports.

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

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

Tanganyika Wildlife Park in Kansas welcomed a new baby pygmy hippo. The boy might just become a new internet celebrity.

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

The pygmy marmoset holds the distinguished title of being the world's smallest monkey and one of the tiniest primates on Earth.

The pygmy hippo, unlike its larger cousin, is more solitary, resembling rhinos in its preference for a largely solitary lifestyle. Reproduction and Lifespan Matusadona National Park, Zimbabwe (image ...

A six-year-old Thai boy with terminal cancer was able to meet the internet-famous pygmy hippo Moo Deng as his final wish.