I searched but didn't find any mention of this movie. Arthur The King was released this year and I didn't see even a hint of an ad for it. A friend recommended it to my wife and me and we saw it on a cruise a few weeks ago.
The title is, in my opinion, really awful. I don't think I ever would have taken a chance on it without a personal recommendation.
That said, it's loosely based on a true story of an adventure racer (had no idea there was such a thing) and his encounter with a stray dog.
If you like dog movies, I can't recommend this enough. It stars Mark Wahlberg. My wife and I both thoroughly enjoyed it. No politics, no nonsense, just a good dog story.