Driving and Maintenance of military vehicles including the Casspir, Rinkhals and the Mfezi Ambulance. Like the rinkhals, it can spit its venom. However, the venom of the rinkhals is produced in copious amounts. Like the rinkhals, it may sham death if threatened, but this is rare. Rinkhals are unique amongst African cobras in being ovoviviparous. If distressed, the rinkhals spreads its hood, showing its distinctive, striped neck. Rinkhals also may live in swamps around southern Africa.