A mammal of the order Proboscidia, of which two living
   species, Elephas Indicus and E. Africanus, and several fossil species,
   are known. They have a proboscis or trunk, and two large ivory tusks
   proceeding from the extremity of the upper jaw, and curving upwards.
   The molar teeth are large and have transverse folds. Elephants are the
   largest land animals now existing.