The Hippopotamus is a large semi-aquatic mammal that is found wallowing in the rivers and lakes across sub-SaharanAfrica. Despite it’s appearance, the Hippopotamus is actually thought to be most closely related to Whales as the two are thought to have had a common ancestor that existed roughly 54 million years ago.
Weight: 0.18 L 14 W 4 H 5.5 cm
