Hi Jason,
This is a very good picture for contrasts. First you have the contrast in the colour of the cattle, then you have the contrasting shapes of their horns. Good find!
Now, to the technical aspects: The crop is good, as is the post processing. My only wish is to see a little bit better exposure on the white bull. It seems a little blown out and some of the detail has been lost. Apart from that, I wouldn't change a thing with the photo.
Good catch! What are the odds of catching a white one and a black one together like this?? Very appealing shot, I like the composition and the "black and white" treatment. Would have liked the background to be a little more out of focus, but hey, you can't have everything!
Good take on the challenge. This is a challenging image due to the bright white and solid black bulls. It also appears that the light is coming from the left therefore adding glare to the white bull. I wonder if a diffuser would have helped here (probably out of the question though due to the nature of the beasts).
The DOF is perfect with just a touch of blurred grass in the foreground.