Hippopotamus amphibius.

FROM ABOVE
Hippos must find places to live with deep lakes and rivers that are within walking distance of grasslands. Since hippos eat about 130 lb (59 kg) of food each day, they must find pastures that can support up to 81 hippos per sq. mile (31/sq. km). Hippos must be submerged in water, especially on very hot days, in order to cool themselves since hippos have very thin, naked skin. Due to their thin skin, hippos can easily become dehydrated or overheated.