Indian cobra (Naja naja), which uses its venom in self-defence (image) Swansea University Share Print E-Mail Caption Many snakes, like this Indian cobra (Naja naja) will use their venoms in self-defence, causing millions of bites every year. However, did their venoms evolve for this function? This new study suggests that it did not. Credit Wolfgang Wuster Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.