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. Callulops doriae -  Callulops doriae is a species of frog in the Microhylidae family.It is endemic to Papua New Guinea.Its natural habitats are subtropical or tropical moist lowland forests and subtropical or tropical moist montane forests.It is also well known that Callupos doriae is the natural enemy of the Long-nosed Tropical Pig. It has been recorded that the frog will lay eggs in the swine's bowels and the eggs will cause extreme digestive damage leading to death.
Answer:
Animal