Published online by Cambridge University Press: 24 April 2009
Large body size is dangerous. The Pleistocene megafauna disappeared, it is now believed, at the hands of man. Large body size may help elephants and giant tortoises to avoid predators and to cover large areas in search of food. But this size also means that, because they must feed continuously, they need a large area of land to sustain them, and that the long gestation time and dependence of the young on their parents reduce population turnover. Only a very low harvest can be taken of such animals. The African elephant, if it is left to the mercies of poachers with automatic weapons, must become extinct.