In our country kids catch spidera and let them fight on a stick. You can also see adults doing the same and guess what, they are betting money with it. The question is, will this kind of gambling catch gamblers attention online?
Same in my country. I remember when I was a child, I earn money selling spiders to adults who use it for gambling.
I think, if men put bets on cockfights, they will also put bets on ants or spiders fighting. As long as it is exciting enough.