Just my opinion, but I think you pushed the contrast too far - the whites and blacks are off the scale. I mean that may have been what you were going for, but I think it detracts from the photos. Specifically:
The DOF on the rhino has his head in focus but his body is OOF, and yet the extreme contrast really begs for a nice crisp, sharp full subject. I think backing off on the contrast would make that less noticeable. Maybe.
The penguin is missing surface detail and texture because of the blown highlights. I think you can get the effect you're looking for without pushing everything past the limit.