Maasai tribesmen look at their cow, which was killed during an elephant attack, in the Kisaju area of Kitengela, on the outskirts of Kenya's capital Nairobi July 18, 2012. About five rogue elephants, which locals suspect to be from the Amboseli national park, 290 km (188 miles) southeast of Nairobi near the border with Tanzania, had flocked to the area killing cows and destroying crops. REUTERS/Thomas Mukoya (KENYA - Tags: SOCIETY ENVIRONMENT DISASTER ANIMALS)