Interesting species here Ian. The dust is a nice touch and I like the low angle with the 2 heads juxtaposed.
The main bison's face is not as sharp as I would have liked it to be - too slow SS setting perhaps? There's also quite a bit of grain in the image, some of which can be tamed with some NR (particularly on the BG).
Incidentally - the trees in the BG look like "bars" of some sort
Thanks, Morkel. Possibly SS or possibly not enough sharpening. I'll go back tonight and play with it a bit and see. The trees are real trees. There are no bars, but there is a chain-link fence in the very far BG.