I wish the bottom right corner was pulled out just a little more to see his feet, but this is still a really nice shot. If this is your pet, you have a photo to treasure!
You stopped the action very well. The lighting on the side and rear of the dog is good but the shadows weigh heavily on its chest. I'd like to see more of the water in the lower thirds as that would give more focus to the shot. Still, it is nicely done.