its a snak
No. If you cut a snake's head off it will die.
It is a kind of venomous snake.
triangular head means venomous so stay away
A snake with horns on its head is typically associated with the mythical creature known as a "basilisk."
A young common grass snake
Are you saying that the snake has like a "hood" around the head? If so, that is a cobra.
It sounds like a king snake, they are harmless. I cant tell you what kind it is because it depends on were you live.
A green tree viper (Trimeresurus stejnegeri).
Do NOT mess with that kind of snake it is poisonous and it is called a copper head. ( I'm am 11 year old snake expert) I am right don't deny mebecause of my age
The snake that has horns on its head is the horned viper.
I don't know what kind of snake that is, but the head shape you describe sounds like a viper. Can you see a real definition from the head and body? It doesn't flow as one? If that is the case it could be a viper. Since you don't know stay away from it.
king cobra