You want this for a virtual sport where you have it all simulated on a screen or perhaps the physical animals involved in the chaos themselves?

I hope not the second because that isn’t sport but animal cruelty. That’s why it’s something you can expect to be done in the underground and as such, you can’t find casinos having to offer such activity for a gambling sport.
Perish that idea mate, it’s sad for these animals not being able to speak for themselves and be used in such brutal form of entertainment.
Have you managed to see such animals after the fight?
Some with a burst Brian and lost there eyes from the various artificial claws they are equipped with.

I wouldn’t want to see that for a sport and it’s good that the government aren’t in on it too.