it has been done as response to Photo Art Challenge 232: Tiger Portrait --> http://www.innographx.com/forum/viewtopic.php?t=2724 at Innographx's
From the Original photograph at Pbase --> http://www.pbase.com/image/40758743/original
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*LEGAL NOTICE
The original photographer, Chuck Hall, retains the U.S. and international copyright © not only for the original image, but also for any photo-art versions of it. Unauthorized distribution or use of this image without permission is prohibited.