Deadly and aggressive snakes with spreading hoods that make a growling noise
King Cobras are deadly and aggressive snakes, They use their spreading hood to warn other creatures not to bother them, while making a unique, among snakes growling noise rather than a hiss. They can grow up to 18 feet in length, and are found throughout the worlds jungles. Primarily feeding on other snakes, they will still attack jumanoids when they feel threatened.
Basic Fantasy Field Guide Omnibus