The other genus, Choeropsis liberiensis , is the pygmy hippo. Around rivers and lakes, preferably near grasses. Male - 3,500 to over 7,000 lbs. Hippos are gregarious and gather in herds with an average group size of 10-15 animals. Some males are solitary and territorial.
Excrement is used for territorial marking, and flung with the tail.
Other males maintain territories containing nursery groups of females and young. At mating time, bulls engage in fights which can be fatal. The primary weapons are the huge lower canine teeth. They can be found asleep in the sun or resting in water during daytime, and usually go ashore at night to feed. Hippos are sedentary, and do not migrate.