It is a semi aquatic mammal belonging to the family Hippopotamus in the order Artiodactyla. It is the largest omnivorous mammal in freshwater, with a huge body size and short limbs; Thick and sturdy head; The mouth is large and can be opened at a 90 degree angle; The front teeth and canine teeth of a hippopotamus are both fang shaped, with the lower front teeth extending parallel to the front like a shovel. The word hippopotamus means' horse in the river ', which is the Greek term for this powerful beast. Mainly distributed in tropical regions of Africa, it inhabits swamps and reed beds near rivers. They often live in groups, move around at night, soak in water most of the time, and have a gentle temperament. I have a huge appetite and mainly feed on aquatic plants such as reeds.