Answer the following question: Ally Sloper was a Thoroughbred racehorse noted for winning the 1915 Grand National.A five year-old owned by Lady Margaret Nelson and trained by Aubrey Hastings it was ridden by Mr Jack Anthony. Carrying 10 st 5 lbs Ally Sloper won the race by two lengths at a price of 100/8 and in a time of 9 mins 47.8 secs. It was Aubrey Hastings' second national winner having won the race in 1906 with Ascetics Silver. It was also the first Grand National winner to be owned by a woman. 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?
Answer:
Animal