This kind of gambling is always fun because these animals fights in the circle of human, have you been involved in this kind of animal gambling or have you watched such game before. Can such game be in the casino?
Well, for me animal fighting is not fun and should not be use as tool for gambling. But if it's not prohibited by the Government, these people won't stop using animal, because as you've said it's fun for those who are engaging themselves in this kind of activity. Anyway, in our country, cock fighting is quite popular especially here in our place. Many men elders are taking care of rooster as business (they sell it when ready) or use it for fighting for their own satisfaction. We have an arena where cock fighting is held, it's legal. Recently they even had a promotion called "fastest kill" and the prize is $600 plus a brand new motorcycle.
To me, that's also unpleasant because it's the same as us torturing animals to satisfy our desires and hopefully, that's outlawed by every government. You may gamble and use any media but don't use animals. However, gambling with animals still occurs in some Asian countries and they can gamble in hidden places. The government has noticed this and banned gambling with animals, but there seems to be some community in some areas that cannot detect it easily. This requires more effort from the government to make its citizens aware that those who gamble using animals have abused these animals.