Venomous Cobra heads bite after being Severed.Chef dies after spitting cobra he was cooking bit him on the hand - 20 minutes after he had cut its head off.Dying snake's final act of revenge came as Peng Fan threw its head away.Its neurotoxic, flesh-eating venom killed the chef before help could arrive.All reptiles can function for up to an hour after having body parts removed.Cobras are a delicacy in China and believed to be good for your health.