Hippopotamuses, also known as Hippos, are a species of underwater and land species that live in the jungles of Earth. Their large teeth are sharp enough to cut through anything and are considered to be dangerous towards Humans. During the 2012 apocalypse, some hippopotamus species were killed in the earthquakes, volanic eruptions and the gigantic tsunamis in the Worldwide Flooding. However, some hippo species were transported to the Arks, along with other animal species in the Zoology Chamber so they can survive from going extinct, as well with more than 400,000 humans on board.
When the apocalypse ended and time was reset to year one, the risen continent of Africa allowed the 2012 human and animal survivors to begin a new life and rebuild their species.