Details of the shot would be useful... the main ones to consider are:

Aperture
Shutter Speed
ISO
Focal Length (ie what lens?)

This image looks like it might either be slightly missed focus or just some motion blur either from the wolf moving or your hand shaking the camera.

If it is the former then you might need to check your autofocus - or if you were manually focused check the eyepiece is giving you the right focus - read the camera manual to see how to adjust the diopeter values on the eyepiece.  If it is the latter then look into trying to increase the speed of the shutter... the guideline figure is 1/focal length - so if you were using the 400mm you need at least 1/400 seconds to get a sharp shot (and i would think a bit more than that anyway - around the 1/500-1/800 should be fine).  Or you may want to consider using a tripod or some other type of support for the camera if you werent...

Hope that helps, and welcome to the forum

"In every colour, there's the light.
In every stone sleeps a crystal.
Remember the Shaman, when he used to say:
Man is the dream of the Dolphin"

Rich Meadows Photography