First: I believe everyone has heard of this kind of eel called "Moonwatching Eel". We often hear old people and women in rural areas talking about this kind of eel. Every night, eels who look at the moon will look up at the moon in the sky. It is said that this eel has horns on its head and feeds on rotting corpses. Its blood contains highly toxic substances. People who eat this eel will turn into blood.

Second: Some people say that in the Ming Dynasty, a couple caught a moon eel and cooked it. The husband died of poisoning after eating the cooked eel. Some people say that his wife poisoned her husband and even tried to plead guilty. A new official of the local government happened to take office. After investigating the food her husband ate, he determined that the moon eel was highly toxic, so he also cleaned up his wife. The legend of the poisonous eel watching the moon has also been passed down.

Third: Despite the fact that the moon-watching eels in folklore are highly toxic, in fact, the body of the moon-watching eels may not be highly toxic. Many people have toxic reactions after eating the eel. This may be because moon eels live in fields and eat some plants sprayed with pesticides, so they accumulate some toxins in their bodies. In addition, there are parasites in the blood of moon-watching eels. If people don't cook the moon-watching eels, the parasites can't be killed successfully, so it is very serious to enter the human body.

Fourth: There is no real news about it at present. The basic theory of science is groundless. Legend has it that there is an eel, which is rare. It likes to eat dead dogs, dead cats and carrion corpses. Its body is thick and its shape is not obviously different from that of ordinary eels. When the moon is half moon and sixteenth, the full moon is bright. It often swims out of its cave and looks up at the moon. This eel is called Moon Watching Eel. It is poisonous and inedible. If you eat it, it will kill you. So it's just a legendary eel.

Some very large eels are "moonwatching eels". This eel only eats dead cats, dogs and mice. Its meat is poisonous, so people can't eat it.