Please answer the following 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. Rat snake -  Rat snakes are medium to large constrictors found through a great portion of the Northern Hemisphere. They feed primarily on rodents and birds. With some species exceeding 3 m (10 ft) in total length they can occupy top levels of some food chains. Many species make attractive and docile pets and one the corn snake is one of the most popular reptile pets in the world.[citation needed] Other species can be very skittish and sometimes aggressive but bites are seldom serious.
Answer:
Animal