I see three pictures, the second is very small. Maybe you could number them next time, it makes it easier to comment.
Giraffe: Although the composition is ok-ish, nothing is really in focus.
Cheetah: Picture to small to judge, the comosition and the moment look very like but I can't tell about the quality
Antilope: Again not really in focus although the shutterspeed seemed to be ok (no movement). His legs are cut off, no interesting background, doesn't work for me.
What camera/lens did you use for this? The quality looks a bit low, or did you resize them with a lot of loss of quality?