During this episode, the narrator states that Menes, the first King/Pharaoh that united upper and lower Egypt died while in a hunting party and was mauled by a hippopotamus. In truth,we don't know how he died. Stating that the king died by being "mauled by a hippopotamus" is simply the way that Egyptians described that the king has died, and has nothing to do with the way that he died.