Hippopotamus

Large and semi-aquatic, the Hippopotamus is a native of sub-Saharan Africa. The pygmy hippopotamus is the other one of just two remaining species in the family Hippopotamidae (Choeropsis liberiensis or Hexaprotodon liberiensis). Its name is derived from the Greek word for "river horse". The largest land mammal is the hippopotamus, followed by elephants and rhinos. Additionally, it is the largest living land artiodactyl. The closest surviving relatives of the Hippopotamidae are cetaceans (whales, dolphins, porpoises, etc.), from whom they separated some 55 million years ago, despite their morphological resemblance to pigs and other terrestrial even-toed ungulates.

When the weather is chilly, hippos warm themselves by taking a sunbath on the banks of rivers and lakes. However, they take skincare seriously, secreting their own natural sunscreen to keep their skin hydrated and stop it from cracking and drying out. People were misled by the pinkish-red color of sunscreen into thinking that hippos sweat blood when, in fact, they don't.