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Wild animals as sport will never be a thing for me, so is the chicken fight, neither will setting an anima against each other like in a boxing ring ever be a thing. Truth be told, it's inhumane for us human to enjoy boxing as a sport and subject other living being to it. It's the height of insensitivity and how much we prioritize our own fun for sanity.
Some sport activist will envision a chicken olympics fight as we now have a dog competition both in the US and UK. Though the sport they subject such animals to are innocent, it spells something wrong as times goes on and might define how we see sport in the future.
Where do we draw the line in sport, what can be involved aside from human to make sports fun, how makes the rules of theses games?