In summer, you can often see a four-legged snake on the roadside and in the grass. Its body is like a snake and it has scales. It is said that this four-legged snake is poisonous. If bitten by it, the skin will be red and swollen, and then rot. Is the four-legged snake really poisonous? In order to find the answer, our interest group conducted a study.

First, we caught a four-legged snake, anesthetized it and fixed it on the anatomical plate. Then use a disposable syringe to suck 0.5ml of saliva in its mouth, pour it into a beaker and add 3ml of water to make the saliva and water mix evenly, and then put a little frog in it. An hour later, the frog was safe and sound. Is the time too short? Let it stay for one night. As a result, the next morning, we found that the little frog was still alive and swimming freely in the water, which was quite comfortable. Is the concentration too low? In order to make our experiment accurate and reliable, we caught four four-legged snakes in the wild and conducted the experiment in the same way as yesterday. As a result, the frog is still alive. From this point of view, the four-legged snake has no toxic effect on the little frog.

So does the four-legged snake have any effect on other animals? We caught a flower cat and smeared 0.9ml of saliva on it to see if there was anything unusual. Two days later, we found that the cat was not injured at all. At this point, we began to relax people's dangerous words about the four-legged snake, and further increased our determination and confidence in the toxicity study of the four-legged snake. We decided to do experiments on ourselves to see if a four-legged snake has any effect on people.

We took 0.5ml of saliva from the mouth of a four-legged snake and smeared it on ourselves. At first, our skin felt a little cold, but after a while, we didn't feel anything and had no adverse reactions. After half an hour, the skin is still unresponsive. This shows that the four-legged snake has no toxic effect on our human skin.

Through the above experiments and research, we understand that quadruped snakes are harmless to human beings. After consulting Dr. Xiao's knowledge base, we also know that quadruped snakes are actually lizards and skinks. They are mainly distributed in Guangdong, Zhejiang and other places in China, and mainly eat mosquitoes, flies, mantis and other pests. They are good friends of human beings and we should protect them.

[Comment]: Four-legged shooting is poisonous. I heard what others said at that time. Is it true?/You don't say. The little author explored a "truth" with his own practical actions. This article describes his own "exploration" process.

Because we don't know whether the quadruped bat is toxic, we choose to do experiments on animals first to ensure the safety of the experimenters, which shows that the author has a strong sense of safety. Only after the preliminary conclusion that animals are non-toxic can experiments be carried out on people. After analyzing a series of experimental data, the final conclusion is that quadruped snake is not poisonous to human beings. Of course, "Tu" did not come into contact with blood, and whether its conclusion is valid or not needs further experiments. After the experiment, the little author did not end his exploration activities, but continued to consult the materials and found that "in summer, a four-legged snake with scales like a snake can often be seen on the roadside and in the grass", which is actually a lizard and a skink. They are good friends of mankind and call on us to protect them.

Imagine that the little author of the article will never know the truth if he does not question and be curious about this statement, but lets it go. The authenticity of science requires us to be brave in practice like small authors.

Revelation1; Experiment with other animals first, and then try "poison" with your own body. This is the embodiment of wisdom and courage, admirable! But it is still not recommended to try "poison".

Revelation 2: The Little Doctor Knowledge Base and other books are our good friends, among which there must be the knowledge of "why a four-legged snake is shaped like a snake and has scales on its body". If the child wants to know, you know what to do.