One of the most poisonous snakes on the planet, the king cobra, can really ,,stand up” and stare a grown adult in the eye. They can go forward to attack even after lifting up to a third of their bodies off the ground when threatened.
The longest poisonous snakes, king cobras may grow to a length of 18 feet.
The quantity of neurotoxic they can inject in a single bite, up to two-tenths of an ounce of fluid, is enough to end the life of 20 humans or even an elephant, despite the fact that their venom is not the most dangerous among poisonous snakes.