Unusual Facts About Pigs - as part of the expert series by GeoBeats.
Here are 5 uncommon facts about pigs.
Pigs are some of the oldest of all domestic animals, having been tamed over 6,000 years ago.
The idea of pigs being greedy comes from the piglets, which will compete strongly to feed.
Pigs are not especially dirty, but they do roll in the mud in order to cool off since they are unable to sweat.
Though hogs are often depicted as being lazy, they can be quite athletic, running a mile in seven minutes.
Pigs are quite intelligent animals, and can be trained better than most breeds of dogs.
