Humans in developed countries are in a position where we can reduce our harm to others. I believe that if you're in a position to be safely and reasonably able to, that you should do your best to reduce the harm you cause. I would argue that reducing harm includes reducing the amount of animals that I eat.
However, none of this really applies to animals. They don't really get the same privileges that humans do in modern society, nor do they have the conscious ability to consider their harm on the world. Furthermore, obligate carnivores don't really have a choice but to eat meat, so they wouldn't be able to safely reduce the harm they cause regardless.