16789
It lives only in a limited area south of the Amazon River in the state of Pará , a distribution that is apparently unique among the muroid rodents of the region .
 Amazon River, Pará
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Amazon River, Pará