Look at the Pupils

If possible, pay attention to the type of pupils the snake has. A venomous snake will most likely have elliptical pupils, like a cat's. While a non-venomous snake will have round pupils.

Find the hole between the eyes and the nose

Most snakes have a small hole on their head, located between the eyes and the nose. It is used to sense heat. This is called the sensory pit. However, if you can't see it clearly from where you are standing, you shouldn't try to get closer.

Snake Behavior

There are two things to note here. First: pay attention to the sound. Of course, this doesn't apply to all venomous snakes without exception, but if you hear a dull, slightly crackling sound, it's likely a venomous snake. Second, non-venomous snakes swim by keeping only their heads above water, while venomous snakes glide across the water with their entire bodies.

Exception: coral snake

There is one snake that is an exception to all the rules. The coral snake (also known as the pepper-tailed viper or coral snake) is venomous, with a small, round head, no suckers, and round eyes like a non-venomous snake.

However, this snake has striking colors. Notice how the red, yellow, and black alternate. If red is next to yellow, it is most likely a venomous coral snake. Also look at the snake's head: it should be black.