Yeah, that dog portrait is fantastic. I'll also just chip in and say that I use manual mode with auto ISO for almost everything. For action it keeps exposure where it belongs. For compositions where you have plenty of time, you just set things where you want them, including getting the ISO where you want it, by changing shutter speed and aperture. It's manual mode using only two knobs instead of three.
So much of it comes down to what you are used to, and once you are familiar with the set up, it becomes second nature. At least that's how it seems to work for me.