The King cobra is a species of venomous cobra located from India to Southeast Asia. The king cobra is without a doubt the most infamous snake in the world and one of the most venomous ones. They are also one the most intelligent snakes, for many reasons including being able to control the amount of venom that is injected upon bite. They are the longest venomous snake in the world, one king cobra was measured at a whopping 5.6 meters (18 feet), but most do not exceed 3.6 meters (12 feet). The main feature that distinguishes the king cobra from other cobras is the possession of 11 large scales on the crown of its head. Adults may be yellow, green, brown, or black.