Given the question: 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. Mitra rubiginosa -  Mitra (Nebularia) rubiginosa is a species of sea snail a marine gastropod mollusk in the family Mitridae the miters or miter snails.
The answer is:
Animal