Hippopotamus (Hippotamus amphibious)
Although hippos might look docile, they are probably the most dangerous African animal. They are not only aggressive and easily enraged, but they are also very unpredictable. On land, this 1-3 ton animal, over a short haul, can easily outrun a man. The adult hippo's only real enemy (other than man) is his pool mate. They bite, maim, and kill each other. The bulls fight over females in breeding season and quarrel over water space at all times, especially in dry season. When seen yawning, a hippo may actually be threatening another hippo. An adult hippo eats more than 150 pounds of grass a night. These grazers tear up grass not with their teeth but with their lips. In the zoo, they eat zoo ration, alfalfa hay, trace minerals, and water free choice.