Good reflection. Since the reflected dogs, in this case, are in a more dominant position in the photo, I wonder if cropping tighter to the real dogs and allowing a little more space above the reflected dogs wouldn't make this seem a little less just a pic turned upside down. Beyond that, while the reflected pair of dogs seems to be well lit, the real pair seem a little overexposed -- as does the sky behind them. Without using a split density filter, or doing some work in PS, I don't know any suggestions to work on this.
The highglights on the non-reflected white doggie's back are overexposed...I think turning down the exposure a tiny bit -1/3, -1/2, or -2/3 would have improved it a little. Still, it's pretty impressive to get those dogs still enough to get their reflection. Especially two of them.
I like it! I think it'd be better flipped over though, and still cover the 'upside-down' base. The leaves going across their faces on the upright image bothers me. Beautiful, colorful image. Great composition.
This is one of the water reflection photos turned upside down that I don't think quite works. It's a shame there are so many of them, because it's hard not to draw comparisons. I think if the photo is composed in a way that turning it upside down creates a new and interesting effect, then that's great, but in this case it doesn't do that. Otherwise, the dogs are really nicely framed, with great natural lighting, very soft yet crisp.