I took this photo of my dog while he was running, figured I would share since its one of the better shots I've taken of a fast moving subject.

Nice. If you want to make some really dynamic shots of running animals here's a few tips. Get low to the ground, sitting or kneeling. It's a far more involving perspective. Try to crop down and zoom as close as you can to the dog to really fill the frame. Lastly, try for wide open apertures like f/2.8 and below. If you don't have a lens that fast, go as wide open as you can. Bring the ISO up to 250-400 if you need to to get a fast shutter speed. Anything over 1/450th of a second should freeze it without any blur.

Keep up the good stuff.

Some photographic tips for ya.

A basic one, read up on on thirds. Basically, to make your photo more aesthetically pleasing avoid dead-center framing like this.

Also, even though this is outdoors in the middle of the day, the exposure in this image favors the grass, and not the subject matter. So my advice would be to either adjust exposure more for the dog, or use a flash even outdoors in broad daylight to fill in the details of the dog's face which are underexposed here.

Last piece of advice would be to try playing around with focal depth for subject isolation. You have probably seen/heard the term "bokeh" used before. Bokeh is the out-of-focus background that makes your subject really stand out.

I don't have my laptop with me but perhaps Forged or Daihas has a couple of examples to show you

Bokeh:

I'll have to play around with the exposure more, but the problem with kneeling or sitting is it tends to distract him and he ends up coming over to me. I try to avoid using the flash unless there isnt a choice since I like the more natural ambient light conditions.

I was actually trying to shoot him towards the left but he actually moved that quickly that my reaction time was not quick enough. He is a very fast dog covering 25 ft in 2 seconds or less.

Yea patience and practice is the key with animals. Try to get him sitting somewhere far off then call him towards you while sitting and it may work better. Good shots take effort, planning and just the right amount of luck sometimes.