This gambling has become a tradition in some countries and I believe even with the invention of new and better gambling, they still value his gambling type. In china for example, they have been practicing insect fighting as spectators and this is the same with Vietnam and Thailand. Japanese for example are known for bug’s fights. They are all weird kind of gambling anyway.
Often the strongest one. I have not heard about incest fight anywhere in my country. People are moving away from these traditions into online gambling.
Now this is the first time i am hearing the Dog fight. I have not seen it i am sure it would be a wild bloody fight.
![Huh](https://bitcointalk.org/Smileys/default/huh.gif)
I never favor gambling on living animals fights. There must be some rules which prohibit such wild acts which involves the risk of losing the real life.