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While sniffing is generally thought to occur solely in terrestrial animals , semi-aquatic rodents ( American water shrew ) also display sniffing behaviors during underwater odor-guided tasks .
 American water shrew
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:
 American water shrew