Our Brittany Spaniel, may she rest in peace. She loved to run, we would take her on long walks, find a big field and let her loose. She would go crazy chasing birds and sometimes drive me crazy too chasing her. She belonged to a friend who had a bunch of hunting dogs but she was unfit for that because she was afraid of loud noises, so we took her in.
I shot this on my Nikon D3300, with the cheap Yongnuo 50mm lens, ISO 100, f/2.5, I believe I had two speedlites setup. I was taking Christmas pictures of the family and of course she was a member too.
As for editing, some cropping and minor tweaks of exposure, contrast, levels...
This is a great portrait, but the background is way too busy for your subject. RIP to your dog.