Ular

Most aggressive snakes are not poisonous, aggressive snakes tend not to be poisonous. They just frighten us or just hang on when we feel annoyed. That's their way to drive away predators.

Be more careful of snakes that are very calm and the movement is slow. These types of snakes are the ones that can have a high. Examples such as King Cobra snake, king cobra snake is likely to run slowly though annoyed. If it is really annoyed, then he will peck and leave the bus to his victim.
No need to twist
If the snake is venomous, it is not necessary to convolve to kill its prey. Because with just one bite, the prey will lie helpless even to death. As for the snake that does not have a tend to twist the prey to quickly die.