вторник, 12 март 2013 г.
The hippopotamus (Hippopotamus amphibius), or hippo is a large, mostly herbivorous mammal in sub-Saharan Africa.The hippopotamus is semi-aquatic, inhabiting rivers, lakes and mangrove swamps, where territorial bulls preside over a stretch of river and groups of 5 to 30 females and young. During the day, they remain cool by staying in the water or mud; reproduction and childbirth both occur in water. They emerge at dusk to graze on grass. While hippopotamuses rest near each other in the water, grazing is a solitary activity and hippos are not territorial on land.