The king cobra—one of the most venomous snakes on the planet—can literally "stand up" and look a full-grown person in the eye. When confronted, they can lift up to a third of its body off the ground and still move forward to attack.
Fortunately, king cobras are shy and will avoid humans whenever possible. It will also flare out its iconic hood and emit a hiss that sounds almost like a growling dog.
King cobras can reach 18 feet in length, making them the longest of all venomous snakes.
Their venom is not the most potent among venomous snakes, but the amount of neurotoxin they can deliver in a single bite—up to two-tenths of a fluid ounce—is enough