The Hidden Lives of Pigs

President Harry Truman stated, “No man should be allowed to be President who does not understand hogs.” Most people know very little about these fascinating animals. In fact, pigs are curious and insightful animals thought to have intelligence beyond that of an average 3-year-old human child. They are smarter than dogs and every bit as friendly, loyal, and affectionate. When in their natural surroundings, not on factory farms, they are social, playful, protective animals who bond with each other, make beds, relax in the sun, and cool off in the mud.

Since most people are not that familiar with pigs, you may be surprised to learn that they dream, recognize their names, play video games more effectively than some primates, and lead social lives of a complexity previously observed only in primates....

Source: The Hidden Lives of Pigs

Link: More 'Amazing Animals'
Link: Pigs are ranked #4 in animal intelligence