Really conveys the lazy hot days of summer well. I love the shadows of the fence in the foreground - the lines on the right lead you right to the horse who's decided it's a good time for a nap.
What a shame that this didn't score higher. Once again doing something a little different doesn't do well on DPC. I can see this as a big mural on a wall somewhere.
Interesting sky. If you moved up a bit on your subjects they might "stand" out a bit more. LOL Something about the colors in this scene make me wonder if a B&W treatment might look better.