Keeping a hexagonal salamander at home is good for feng shui. Hexagonal salamander has no forehead scale arc, and the vertebral body is concave. The costal groove on the side of the body is obvious. Most species of adults are mainly terrestrial and live in caves. In vivo fertilization, there are about 30 kinds. Widely distributed, north to southeastern Alaska and south to the Mexican Plateau.
When they breed in early spring, they enter ponds or streams to lay eggs, and some species lay eggs on land in autumn. When the winter rain comes, the larvae enter the water to live. Eggs attach to branches or other objects.