Cows use bacteria in their digestion to break down ceulose into something they can digest. Those bacteria produce methane, which the cows burp out.

Killing a few cows accomplishes nothing; you need to get people to stop raising them.

Not op, but: Cows emit methane, but that’s just their natural state as they fart. The problem is how many we have in the meat production industry

Someone correct me, but I think that was the gist.
Or did I understand you wrong? :⁠-⁠\