Cobra is the common name for members of the family of poisonous snakes, Elapidae, known for their intimidating looks and deadly bite. Cobras are recognized by the hoods that they flare when angry or disturbed; the hoods are created by the extension of the ribs behind the cobras' heads. These reptiles are found throughout the Philippines, southern Asia, and Africa. The king cobra is the world's longest poisonous snake.