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. Mandarin Duck - The Mandarin Duck (Aix galericulata) or just Mandarin is a medium-sized East Asian perching duck closely related to the North American Wood Duck. It is 4149 cm long with a 6575 cm wingspan.
A:
Animal