pigs are often misunderstood, as being dirty n stupid. hopefully the previous post on pig's intelligence cleared out some of those misunderstanding. ;)
pigs are Clean animals. they roll in mud, but only because they can't sweat like human. the mud (or water) keeps them cool. pigs, who are excellent swimmers, prefer water to mud. pigs are intelligent, highly social, n sensitive. they are actually more intelligent than any breed of dog. like dogs, piglets learn their names by 2-3 weeks of age. they are social animals. they form close bonds with each other, other species n humans. they are cooperative n often defend one another. they like being scratched behind the ears and shoulders. at the touch of your hand, will roll over for a belly rub.
there you have it, pig's intelligence n cleanliness. better understanding yet ?? ;)