River Horse: A Brief History

Thousands of years ago, travelers from Hellas (modern day Greece) journeyed to the continent of Africa. While there, they stumbled upon enormous river-dwelling quadrupeds. These unique four-legged beasts reminded the travelers of horses; and since these beasts spent most of the day residing in rivers, they saw fit to name them hippopotamus.

Hippos is the ancient Greek word for horse, and potamos for river. References of the word hippopotamus can be traced back to Herodotus's Histories, circa 440 BC.