Mulefoots (the breed) used to be considered high-end pork and in the early 1900s, there were quite a few mulefoot operations in the US. The boom of the cattle industry squelched at big part of the pig industry and many of the specialty breeds like mulefoot pretty much faded into oblivion.
While considered to be a genetic defect by many, part of the reason that mule foots became popular, aside from their purported superior meat quality, was that with the toes grown together, they were less prone to hoof-rot issues that often plagued other barnyard pigs.
With that said, you can have a mulefoot without having it be part of the breed. It is a genetic mutation. So you can get random individuals with it.
Several of us have gotten them....M Bennett, guess, and me, and now Believer, but I suspect many others probably have and simply didn't notice the condition. The more this gets noted, hopefully the more people will notice. I have gotten two. This was my second. http://texashuntingforum.com/forum/ubbthreads.php/ubb/showflat/Number/4509834/Searchpage/1/Main/370030/Words/mulefoot/Search/true/Re:_Montague_Mulefoot_Sow_Vide#Post4509834 M Bennett had his mounted, which is pretty cool. The thread was here, but he pulled the picture. http://texashuntingforum.com/forum/ubbthreads.php/ubb/showflat/Number/5196314/Searchpage/1/Main/424483/Words/mulefoot/Search/true/Re:_smokin_hog_an_eyes_light_u#Post5196314
A bit of fun reading...https://books.google.com/books?id=xvcYAA...ect&f=falsehttp://blogs.scientificamerican.com/tetrapod-zoology/2011/09/28/mulefoot-and-other-syndactyles/
Mulefoots are very cool. Can't wait to see the pics!