Recycled by pharmaceutical companies. Most of the answers will say that the skin of the bullfrog has a certain medicinal value, some businessmen will be in the bullfrog clean, the bullfrog skin will be handed over to the pharmaceutical company to recycle, but in fact, the skin of the bullfrog can also be eaten, the bullfrog's meat is rich in nutrients, but the skin of the bullfrog is also rich in collagen, and has a very good cosmetic effect.