See what happens when Pygmy hippos and Wolf's guenons interact in one of the world's few mixed species exhibits.

Noi Psaroudaki, a veterinarian at the Attica Zoological Park in Athens, says a rare male pygmy hippo born earlier this year is doing well — and giving hope to conservationists aiming to increase the population of this endangered species.

It was a visual spectacle for those who visited the Virginia Zoo on Tuesday, as a rare and endangered pygmy hippo offspring made a public debut outdoors. With only about 2,500 pygmy hippos remaining in the wild, we're leaving you with...

Thailand produced an unlikely celebrity this year a baby pygmy hippo called Moo Deng.