The extinct woolly mammoth used them to dig through the frozen ground for moss to fill its belly. Modern elephants use their tusks to dig in the earth for salt. Their tusks are also weapons with which they may defend themselves against lions and tigers. With their tusks and their enormous bulk, elephants were once the kings of the world.
月牙形的長牙對大象恰如雙手，蒙它相助，已絕跡的長毛象掘凍土裡的苔蘚裹腹，非洲象、亞洲象靠它掘地裡的鹽塊補充鹽分，有這一對「工具兼武器」防衛獅子、猛虎，再配合巨大無比的身軀，大象一度稱霸地球。