Mortal poison: Understanding Snake Venom and How It Works

Snakes of the family Elapidae (ex. cobras, mambas, and adders) have a similar venom delivery and injection system as vipers. Unlike vipers, elapids do not have movable front fangs. The death adder is the exception to this among elapids. Most elapids have short, small fangs that are fixed and remain erect. After biting their prey, elapids typically maintain their grip and chew to ensure optimal penetration of the venom.