Right now, around one billion pigs patrol the planet, flourishing on every continent except Antarctica. They're a a critical player in modern medicine and one of the smartest animals in the barn. Pigs open a window into human anatomy and even our emotional lives. National Geographic joins scientists who are researching pigs in surprising new ways, revealing the brilliance behind one of man's smartest friends.

Originally released by National Geographic, 2020. Streaming video file encoded with permission for digital streaming by Infobase on January 05, 2023.