I shoot this subject every time I am at the beach, in the evenings, when slow speeds are almost a necessity. Your shot has some issues that make it not a "keeper", but an okay "motion study". No tail on the dog, at least no visible tail. The "schema" for "dog" usually has a tail...
There's not a lot of
iconic dog parts visible. Slow-speed panning like this is very tricky, and the right speed for the distance, angle, and the speed the dog is moving at all interact, very fluidly. The way the dog's feet are positioned is interesting, but is not ideal. The strong, late afternoon/early evening light is not showing the dog's coat off much, but the grass is very bright. It's just not a "keeper" shot as shown. Getting a really GOOD shot of this kind of thing involves skill,timing,theory, practice, and LUCK. Luck is good.
Most shots of this type/genre are not very good. Here's what I mean...I shot 65 of the same thing on April 25. I still shoot this kind of thing WHENEVER I get the opportunity.
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Again, I shot 65 frames of this...I had three I flagged, but only ONE was really worth processing.
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This was a new pup (cute female Australian shep mix) his owners had had for 10 days. I sent them a shot of it. They loved it. Me? Not so much.