A dozen refugee children play in the grounds all day, and the hippos watch them from the lake. Only the tops of the hippos' massive, reddish-brown heads and their constantly twitching ears show above the water. If the children come too close to the shore, the hippos snort and bluster and open their jaws menacingly, or make a rolling dive, to scare them away...Link Discuss (via MeFi)
The refugees, unfamiliar with the ways of the giant African herbivores, have tried repeatedly to fence them in with barbed wire to thwart their raids on the salt lick and keep them from upsetting the cows. But to a hippo, a barbed-wire fence is an annoyance, not an obstacle.