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After studying the specimens collected by the expedition , he assigned scientific names to the black-tailed prairie dog ( " Cynomys ludovicianus " ) , the white-footed mouse ( " Peromyscus leucopus " ) , and the mule deer ( " Odocoileus hemionus " ) .
 animal: black-tailed prairie dog; animal: mule deer
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 animal: black-tailed prairie dog; animal: mule deer