Dr Kumar said the cobra had died apparently because of the trauma to the head and mouth from the child’s bite.

Nah, I'm going with it dieing of a combination of shock and embarrasment. That is not how a snake bite is supposed to go.

If the kid's first reaction to somerhing deadly is chomp, I pity anyone who crosses them in the future. I don't think it would be inappropriate for them to wear the fangs as a trophy, and a warning.