"So to answer your question, in principle it absolutely applies to dogs..."
If I misunderstood your question then you can rephrase it. If your question wasn't about rational and ethical arguments about meat consumption, but instead personal feelings and emotions, then sure I can fully admit I am personally not cool with you going out and killing a dog because the scenario you present comes with a cultural and emotional context that I am predisposed against having been raised in the Western world.
If the purpose of your argument was that you're against killing animals for emotional reasons, then I actually respect that and have nothing against you feeling that way and encouraging others who feel the way you do to consume a vegan diet.
I think there are numerous benefits to a vegan diet, I just don't think the argument you made that we should choose it primarily on the basis that killing an animal is intrinsically violent in and of itself is a rational argument. It's a perfectly fine emotional and cultural reason to do it, and those are good reasons, but it's not a strong rational reason in so far as the arguments you've presented have not been rational.
Finally to answer your question about genetics, here is some further reading:
https://www.washingtonpost.com/news/to-your-health/wp/2016/0...
https://wellcomeopenresearch.org/articles/5-291
https://news.cornell.edu/stories/2017/06/modern-european-gen...
What is this evidence?
And, you didn’t really answer the question. Would you be fine with my stunning a dog, slitting it’s throat, and boiling it alive? I’m well aware of how culturally acceptable it is in other places, but i’m not asking that. Im asking if you’re cool if I do that to a dog.