A rare pygmy hippopotamus has been born at the Athens Zoo for the first time in ten years. Moreover, this is a boy, which is also rare. There are more females than males in zoos around the world. The baby was born a little over a month ago. He weighed seven kilograms - a real hero. Typically, newborn pygmy hippos weigh between 4.5 and 6 kilograms. Pygmy hippos are native to West Africa. They are on the...