I would go up to the person and say to there face hay, i bet my dog can bet that dog up, No really i would probely say something to the person talking.

I havent read all the post in this thread so maybe im alone in my opinion but I would go with (A.) mainly because i dont see what the big deal is in using animals for sport, we do it with horses whats the difference if they get hurt or not when we as a race wholesale slaughter animals for food and a quarter if not more of it gets thrown away and wasted. we talk of moral obligations but what of racial superiority and dominance? i mean sure alot of you may have pets and feel disgusted by it but so do vegans by us eating meat we all have differences so what if a fraction of humanity enjoys watching animals hurt each other for sport after all people like boxing and wrestling and in the past gladiator matches. we may try to deny our darker nature but its still there and to deny that is to deny what it means to be human now im not saying we should go out and murder or kill animals for pure entertainment but should it really be considered so much of a crime when we slaughter animals by the hundreds?

I would notify the store manager and the local humane society and the police. I would not mind my own business.

personally as a person who owns 2 pit bulls, and they are my babies!! i would try to confront them, it would either end in them leaving the store and me reporting them, or them attacking me in which case they will be detained anyways