Almost certainly we do. But, do you think if there was a culture that ran dog fights, that would be ok just because it’s part of their culture?

I would not find that ok, because all sentient beings are worth moral consideration, and culture is not a good reason to hurt sentient beings. I might not focus on it especially if that culture was already marginalized and discriminated against and there were bigger problems to solve, but I’d still have the understanding that it’s bad