The rules are there has to be a plant AND animal in the photo, plus a proof shot. You have the proof shot and the animal, but no shot with a plant in it.
Please understand, by combination photography I mean that you should combine two elements; plants and animals. At least one plant and at least one animal should be featured in your photo to have it qualify. If your photo does not qualify, or if you do not provide the proof, you will not qualify.