Pigs enjoy novelty and are extremely active and inquisitive. A pig's powerful but sensitive snout is a highly developed sense organ. A pig's sense of smell is so keen that the animal is trained in France to unearth truffles, an edible fungus that grows underground. Pigs appear to have a good sense of direction, as they have found their way home over great distances. They can run at speeds around eleven miles an hour and can trot for relatively long distances.
Few species are more social than pigs.
They are quite gregarious and cooperate with and defend one another. Adults in the entire social group will protect a piglet, leaving food or their own litters to defend the endangered youngster. If one pig starts to dig out tree roots, others will invariably join in. Touch and bodily contact are especially important. Pigs seek out and enjoy close contact and lie close together when resting.