The biggest amphibian is the giant salamander.

Gale is the largest and most precious amphibian in the world. Because it sounds like a baby, people also call it giant salamander. It is a national second-class protected aquatic wild animal, a key development variety of agricultural industrialization and characteristic agriculture, and a wild animal gene protection variety. Except Tibet, Inner Mongolia and Taiwan Province Province, it is distributed in other provinces and cities, mainly in the mountains and streams in the middle and upper reaches of the Yangtze River, Yellow River and Pearl River. The biggest amphibian of the giant salamander is the giant salamander. Reason: Giant salamander is not a fish, but the largest amphibian in the world, which is produced in China. Because it can live in water like a fish and cry like a baby, it is named giant salamander. In fact, its scientific name is China Gale, which belongs to the netdwelling animals. The doll's fish head is wide and flat, its eyes are small and its tail is flat and long. Its height is 1.8m, and its body length can reach tens of kilograms. The body surface is smooth, with mucous glands, small sound particles, brown back and black spots. When swimming, its limbs are short, the forelimbs are 4 fingers, the back is 5-driven, and the forelimbs are close to the sides of the body. Bend your body and tail and move forward. The giant salamander likes to live in the gorge at an altitude of 1000 meters. Usually live in caves at an altitude of 200 meters during the day, and go out for food in the evening or at night. It has a wide range of eating habits and likes to eat fish, crabs, snakes, frogs and other animals. But its wind teeth have predation function, but not chewing function. So when you catch your prey, it can only swallow a frog in one bite and can't digest it completely. Therefore, it has a strong hunger tolerance. Summer is the season for giant salamanders to lay eggs. A female fish lays eggs once a year and can produce one at a time. The egg is milky white and wrapped in a beaded colloidal capsule. The female fish leaves in a hurry after laying eggs, and the male fish shoulders the responsibility of protecting the eggs and uterus. In order to protect eggs, males often tie a rosary-shaped egg belt on their bodies, or form a semi-U-shaped body thinking, and enclose the egg belt attached to the stone to hatch. Two weeks later, the young Feng was born, and Xiong Feng fulfilled his father's responsibilities before leaving Dong Er. In winter, the giant salamander has no ability to adapt to the temperature and can't resist the invasion of cold, so it has to hide in a pool or cave, stop eating and go into hibernation until the weather gets warmer in March and April of the following year. Giant salamanders are mainly distributed in various places south of the middle reaches of the Yangtze River. It not only has valuable scientific value for biological evolution and geographical distribution, but also has high economic and medical value.