Pigs are domesticated animals that are reared for meat, fat, and skin. They are also known as swine, hogs, or porkers. Some pig breeds are Duroc, Yorkshire, Hampshire, and Berkshire. Pigs are intelligent animals and have been used in various expressions like "pig-headed," "sweating like a pig," and "when pigs fly." They have also been portrayed in various children's stories like "The Three Little Pigs" and "Charlotte's Web." In addition, pigs are also associated with love as some cultures believe that they bring good luck and fortune when given as a gift on New Year's Day.