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However , it has a wide range , and a presumed large total population , and the rate of decline is slow , so the International Union for Conservation of Nature has rated its conservation status as being of " least concern " .
 International Union for Conservation of Nature
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:
 International Union for Conservation of Nature