You can't submit the altered photo in the contest - but you can enter the original.
12. Entries must not be digitally enhanced except for basic cropping, resizing, and/or a simple border. Watermarks are allowed, with limitations. (see next point)
13. Watermarks may contain the photographer’s name or basic logo to show ownership of the picture, but may not contain business name or Internet address. (Remember, these contests are to celebrate the diversity of wonderful pets our members care for. Please understand that they are not for advertising your business and plan your watermarks accordingly.)