Elephants at Masai Mara - When an elephant dies, the other members of the herd remain in the area while the body of the deceased rots. Or so it used to be. Nowadays rangers immediately remove the tusks from any fallen elephant to keep the ivory from falling into the wrong hands. A hippo, when it sees a human, generally flees for the safety of water. However, once in the water, it becomes very territorial and will defend its space aggressively.
Hippos kill more people in Africa than any other wild animal.
I saw an article in the East African Standard which said that 354 people had been killed by wildlife between 1989 and June 1996. Reputedly they will stand around even as lions devour a mate that has been freshly slain. The only reason I can think of is that they are so ugly that they are not the first choice of predators. The same might be said for the anti-social American male. If you encounter one, run away from it in a zigzag pattern and then lie down where it cannot see you.