Since you asked for C&C not likes and I'm somewhat familiar with your skill level, here's my take. I will go back every so often and rework an image. To me, editing is a process of improving the positive attributes of an image, and decreasing the negative. I try to let the image itself guide me in those decisions. It's a combination of technical skill, and personal taste, which changes over time. Sometimes I see improvement and sometimes i find that there's a point you have to just leave it alone.
In the case of Quincy there's a noticeable shift in WB, between the first and second. I've noticed over the years that people "perceive" WB differently, and over time those perceptions change. WB affects how we perceive all the colors in the image. Rather than rely on my eye after the fact, I always use a target. I prefer the warmer second image, but for the reasons noted above have no way of knowing if the colors of his coat are accurate.
In addition to WB, setting the correct White point and Black point is just as important, in color management. In your rework the histogram shows the White point and Black point are limited. A decrease in either will affect the vibrancy of the colors in an image, and the micro contrast transitions. I realise this might have been a creative choice, as I occasionally choke them to take the edge off off an overly sharp image.
There is some noticeable shadow recovery in Quincy between the first and second, and significant sharpening/brightening in the eyes. Definitely an improvement. IMO, his fur needs dodging and burning, to bring out the detail.
If I were to rework the image I'd look at the background. While cool colors normally retreat, the neutral colors of his coat aren't forcing the greens back. You also have the same issue with the road surface. Good place to pull multiple gradient filters to make him the star.