This is a nice clear pic of the fox, well-done in waning light. The wind, the movements you describe, the type of surface photographed all play a big part in what is shown, looks like.

The responses from the highly experienced photographers may possibly be correct, however, I'd like to make an observation as one who has far more experience with canines than with cameras.

The "blurry" areas appear to me as though the camera did an exceptionally good job of recording that canine double coat exactly as it is, and in the two dimensional image may seem to be blur.
Where the longer guard hairs in that double coat lie flat upon one another, they will not show the same apparent texture and density as where the camera sees them more at an end view of the hair rather than a side view of the hair. Those differences are even clearly visible in a direct view without a camera when in close proximity to a canine with that type of soft, medium length double coat.
The longer guard hairs in the bushy tail and in the neck and shoulder ruff / mane are where it would be anticipated the flat position of the guard hairs would be highly noticeable with the animal in that position and viewing angle.
Think carpet pile as viewed from directly overhead just after it has been fluffed by the brush roller on a vacuum compared to the way it is seen in a flattened down position in a high traffic area.

Not to divert this thread by a tangent about canine double coat, there is information online about it. Seems most sites are geared toward pet care and show dog prep, but this one is one example which deals more with explanation of the coat characteristics, though not specifically from a photographic emphasis: - https://janedogs.com/dog-coat-terminology/

It's your image, your opinion is prime. You asked for feedback and all was giving in good-faith, including the need to properly output your files to the sRGB colorspace for use online.

If you open your image to the max full screen, then turn your head away and turn back, where do your eyes go? Don't worry about what aspect ratio was used. Follow your own eyes and consider where they go. Do they naturally fall / go to the most important part of the image? Mine keep going to the center, making me then wonder what am I seeing at the center. This observation drove all my questions about what happened there, as I looked at the details where my eyes fell. That observation also influenced ideas of how to re-crop to change the details that naturally fall at the image center of this composition, not all compositions, this composition.