Unfairness to the pigs

Few animals have such economic significance to mankind yet suffer from such a deplorable image as does the pig. As a domestic animal, it is a source of a wide variety of meats, high-quality leather, durable bristles for many kinds of brushes, and hundreds of medical products. At the same time, the pig is frequently regarded as unclean and even untouchable by many people. In spite of their reputation, pigs are neither filthy nor stupid. Because their sweat glands are relatively ineffective in lowering body temperature, pigs seek relief from the heat by wallowing in mud or shallow waterholes. When provided with? a clean environment sheltered from the sun, however, pigs are fastidious. Furthermore, in tests of intelligence, pigs have proved to be among the smartest of all domestic animals – even more intelligent than dogs.