2, toad, also known as toad. Amphibians, the body surface has many bumps, within the poisonous glands, commonly known as toads, mangy monkeys, mangy thorns, mangy pimple treasure. In our country is divided into two kinds of Chinese toad and black orbital toad. The toadstools extracted from them and the toadstool coats are medicinal herbs that are in short supply in China. Toad amphibious, skin covered with small holes with permeability, plus they are born from the amniotic membrane and shell and other structures to protect them, resulting in their sensitivity to the environment is higher than other groups, amphibians are considered to be the detection of environmental changes in the weathervane.