Oryx, Central Kalahari Game Reserve, Kenya
The oryx is a mysterious creature, some believing that it is the antelope on which the unicorn is based. The oryx, of course, has two straight horns, rather than just one, but I can see where the comparison makes sense.
Nikon D300 with Nikkor 200-400mm lens (at 200mm) ISO 800, f/5.6 at 1/13th of a second