Salamander (Andrias davidianus)  is a reptile, and is divided into two families: the giant salamander and the small salamander; the small salamander is 5-9 cm long, the giant salamander is 60-70 cm long, and the largest can reach about 3 meters and can reach about 300 catties. The limbs are very short, with 4 fingers on the front limbs and 5 toes on the hind limbs, with a little web between the toes.