2. King Cobra
Bow down to the king of snakes! Without a shadow of a doubt, the King Cobra is the most deadly snake in the world. This particular snake can grow to over 18 feet in length. And when it attacks its prey, it can stand on one-third of its length. If you actually imagine this, then the sight is pretty scary. King Cobras are the only kind of snakes which builds its own nests. A single bite of the King Cobra contains enough poison to kill 20 people or one single elephant!