Toad, also known as toad. It belongs to amphibians and belongs to the same family as frogs. Toad has many papules on its surface and poisonous glands inside, commonly known as toad sting. In China, there are two kinds of toads: Chinese toad and black toad. Venenum Bufonis and Venenum Bufonis extracted from it are scarce medicinal materials in China. Toads are distributed all over the country. From late spring to late autumn, they often lurk between grass and crops during the day, or around houses and under rocks and caves in dry land, and often climb on the roadside and grass to feed at dusk. Most toads are slow and clumsy and are not good at swimming. They crawl on the ground most of the time, but they also jump briefly when they are in danger. But there are exceptions, such as Ranidae, Bufonidae and Bufonidae, which are very good at jumping and competing with frogs.