From rare mammals to exotic reptiles, these little ones not only capture hearts but also contribute to preserving species at risk of extinction.

Take a look at some of the stories that made us smile. Thailand’s adorable pygmy hippo Moo Deng has the kind of face that ...

A Virginia zoo got a hippopotamus for Christmas because only a hippopotamus would do. A female pygmy hippopotamus calf was born at the Metro Richmond Zoo in early December, marking the third calf ...

The baby had a watery entrance. “This birth was unique as it was the first time Iris gave birth in water,” the zoo said. “While common hippos usually give birth underwater, pygmy hippo ...

A public vote has opened to name the Metro Richmond Zoo's newborn female pygmy hippopotamus calf. The calf was born on Dec. 9, according to a Christmas Eve news release from the Virginia-based zoo.

A female pygmy hippopotamus delivered a healthy calf at the Metro Richmond Zoo earlier this month, officials said — the third baby hippo born at the zoo within the past five years. The mother ...