I know I have read about one but I don't remember which promotion did it. I think it was Big Japan or maybe it was XPW back in the day when it was around. From what I remember it was a title match and the title belt was put inside a cage full of rattle snakes and the winner of the match had to retrieve the belt from the cage without getting hurt by the rattle snakes. I dont remember who was in the match or if anyone got bitten. But that is the only match that I know of that involved snakes.