@rocketcochon: The same way you'd upload anything... go to upload, set your file in one of the File fields like "File 1" and hit the post button on the bottom. Or it might have been posted and then deleted (but that's unlikely).
@Tea I retried but it won't show up. Do i need to save the image in a image stocking site then paste the link in The file fields? Or write something in URL?
is it a jpg file? Make sure its something the server understands. If you re-upload it and you don't see a dupe message, then the file didn't upload correctly the first time.
The fact that it's based off of a real image, combines with the fact that I hate seeing this kind of crap (animals humping ANYTHING), disturbs me. Get your pets spayed or neutered, folks.