Chandkaushik
This is a story about Bhagawän Mahävir when he was a monk. He used to fast, meditate, and perform penance. He was traveled bare feet from place to place and village to village.
Bhagawän Mahävir once decided to go to the village of Vachala. On his way, he would have to go through a forest where a poisonous snake named Chandkaushik lived. It was said that Chandkaushik could kill a person or animal just by casting an evil and angry glance at them. All the people of the villages near that forest lived in absolute fear.

Bhagwan Mahavir Enlightening a poisonous snake – Chandkaushik