Is there really a cockscomb snake?

According to my mother, she is over 60 years old and comes from Yaoli, Jingdezhen. When I was in elementary school, I played with a cockscomb snake while watching cartoons. She told me that when I was a child, I went to the mountains to cut wood, which was easy to see. This snake is not very good at attacking people, but she can't fight. Even if she is killed, the snakehead will break off and "fly" to bite, and this person will die. And I asked another elder, and they all said there was, but as others said, they can fly and scream, and no one has seen or heard of them. But most people replied that this snake has a red crown on its head, and some older elders said that it looks like a sarcoma when it grows up. When it grows bigger, it will grow into green and gray, and then it will slowly change from the crown to red until it reaches the full red crown, and then it can reproduce, which may take four to eight years. I guess: snakes have a long growth cycle and weak reproduction. Some external factors may be the natural enemy Dachuan, which made them extinct and naturally eliminated by the natural biological chain.