my guess would be that those are defanged cobras.... i was watching a documentary one time that was covering snake charmers and how they did it. The defanged cobras only live a few weeks/months or whatever the time period was and being defanged pretty much took the life out of them. When someone brought in a normal cobra all the snake charmers scattered like roaches.

either that guy has balls of steel or those are defanged.