Please answer the following question: Francois' langur (Trachypithecus francoisi) also known as Francois' leaf monkey Tonkin leaf monkey or white side-burned black langur is a species of lutung and the type species of its species group. It is the least studied of the species belonging to the Colobinae subfamily.The species is distributed from Southwestern China to northeastern Vietnam. The total number of wild individuals is unknown but there are believed to be less than 500 left in Vietnam and 14001650 in China. Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
A:
Animal