Depends where you are from. If you are Hindu in India meat is not standard. Lots of vegetarians in that regian as well as Jain diet followers.
Then you have South Korean dog farms, so if we were posting strung up dogs people would be freaking out of NSFW tags.
Its all relative to desensitization.
im not saying you have to or should be forced to NSFW tag those images, but it can be highly distruving for a large number of people.
Like some friends love meat but if I shown them how you disembowel the rabbit or duck before cooking they'd be barfing