Please answer the following question: Nathusius' pipistrelle (Pipistrellus nathusii) is a small bat in the pipistrelle genus. It is very similar to the common pipistrelle and has been overlooked in many areas until recently but it is widely distributed across Europe. 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