Welcome to critique!
That's a very good picture to start with! He (?) has a pretty impressive set of horns!
It's always nice to include your shot information if possible. At a more than slightly informed guess, here it is:
Nikon D70, 1/80", f5.6, 300mm, AWB, Manual mode, ISO 200, All modes normal. Image manipulated in ACDSee.
You've done really well to get the DOF as good as it is here - the background is just blurred enough to concentrate the eye to the perfectly thirded subject.
If I were to comment in terms of improvement, it would only really be in the image manipulation - I think the image could do with a bit of a sat boost and a touch of USM to make the fur pop a little.
Rob