When a toad is attacked or strongly stimulated, its skin, especially a pair of posterior ear glands on its head, will release a milky liquid. In addition, the round protrusions on the skin are composed of many skin glands similar to the posterior ear glands. Besides glands that secrete mucus to keep the skin moist, there are also glands that secrete milky white liquid. The milky liquid is poisonous, which is a weapon used by toads to defend themselves, but this weak toxicity is useless to people. If you get it on your hands or skin, it has no effect at all. If you put it in your eye, you will feel pain. As long as it is washed with clear water immediately, there is not much harm. We hold the toad in our hands, and if we don't hurt it strongly, it won't release its venom easily.