Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. The Penguin King -  The Penguin King (US title: Penguins 3D) is a 3D feature-length natural history documentary which follows the life of a male king penguin on South Georgia. The Penguin King is the second collaboration between Sky Atlantic Productions and David Attenborough who wrote and narrated the film. It was preceded by Flying Monsters 3D screened a year earlier and will be followed by the three-part series Kingdom of Plants 3D in spring 2012.
The answer to this question is:
Film