Zoo officials believed Bertha had been the oldest living hippopotamus in captivity following the death of a 62-year-old hippo named Donna, who died at the US Mesker Park Zoo and Botanic Garden in ...

The birth of a rare pygmy hippo means the newborn's species is closer to being saved. This week, a rare pygmy hippopotamus was born in Athens' Attica Zoological Park. The species is endangered ...