Hippopotamus

Hippos lead an amphibious lifestyle.

An excerpt from the article 26 facts about Hippopotamus
They mostly stay in the water during the daytime, showing activity after dusk and at night. Then they come ashore and nibble grass in meadows near the water (they also feed on aquatic plants). Moreover, they can venture up to 8 km inland in search of food. On land, despite their gigantic size, they can run faster than humans. Their speed ranges from 30 to even 50 km/h, but only over short distances, up to a few hundred meters.