Pet pigs, who often live indoors and are bathed regularly, are as clean as dogs or cats. Wild pigs or pigs who live on farms are obviously dirtier, but with good reason. Pigs in the wild and on farms often give themselves mud baths—much like rhinos, elephants and horses. There are several reasons this mud bath in beneficial to pigs. The mud helps rub off and suffocate small parasites, and, as it dries, builds a protective barrier that repels flies. Read more...