We had a young man recently install some flooring for us. When our pooch was really attracted to him the guy advised that he has quite a menagerie of pets at home. He then added that his very favourite "pet" is a pot bellied pig which he says is both affectionate and highly intelligent. Further he stated that the waste from this pig helps to fertilize his garden. I remember reading some time ago that these pigs have been quite popular with a number of different celebrities worldwide it seems.
I don't know either but apparently George Clooney had a pet pig for many (19?) years so he must surely know!
I have read that potbellied pigs make good house pets. They are supposedly as smart as dogs and chimpanzees. They can be trained to go potty in an appropriate place. We think of them as dirty because they have been traditionally kept in muddy pens and have to walk in their own poop.
Still...no thanks. It's either a cat or dog for me. I don't even want a bird as a pet, although I know many do.