These largest mammals on earth have managed to survive after the world ban on ivory trade in 1989. Their dwindling population has managed to stay afloat in the northern Serengeti, Ngorongoro, Tanzania and Lake Manyara. These giants have excellent memory and intelligence. They are characterised by their large heads and two large ears that cover their shoulders to radiate heat. They have a large muscular trunk and prominent tusks developed in both sexes. It has been observed that the elephants, especially the males have an aversion to rhinoceros. They are found to have murdered rhinoceros at first sight.