Almost every day, Mars gives his caregivers a hard time and makes it difficult for them to get him inside. They posted a ...

A baby pygmy hippo's viral moment at Tanganyika Wildlife Park showed how a mother's stern look works across species. Mars, ...

An adorable baby hippo named Mars has gone viral, as the animal's stubborn refusal to get out of the water has captured the ...

Pygmy hippo Mars didn’t listen to the zoo caretaker when play time in the pool was over, so his mom, Posie, had to step in.

In Molly's video, Moo Deng is enjoying a swim in a small tub while her caretaker lovingly scratches her head. It's clear ...

It doesn't get much cuter than this stubborn baby hippo on his 'no bones day,' even if his hard-headed personality makes ...

In a moment that has melted hearts across the internet, a baby pygmy hippo named Mars refused to get out of a pond at Tanganyika Wildlife Park in Kansas – until his mother stepped in with a look that ...

Fortunately, Moo Deng's caretakers at Khao Kheow Open Zoo have heard your cries. The Thai zoo has launched a 24-hour livestream of its pygmy hippo enclosure, giving people the world over a chance to ...

CINCINNATI, Ohio -- The votes are in. The Cincinnati Zoo's bouncing baby hippo is named Fritz. Choosing the name of Fiona's little brother, born August 3, was a group effort. The zoo received more ...

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.

Baby pygmy hippo Moo Deng eats fruit presented for her first birthday celebration at the Khao Kheow Open Zoo in Chonburi province, Thailand, Thursday.