Board Thread:Help and Support/@comment-25982895-20130712183654/@comment-4748628-20130712193252

If you edit the page and switch to Source mode, you'll see a line like this in the infobox:

After the = sign, you simply add the name of the file, ex "Wildcat_with_Plant_Background.png". Do NOT include the "File:" part of the name.

So it would look like this:

I updated your page using that image that was on the page so you can see it in action. You can undo or modify my edit if you wish to use a different image.