4496
The black rat is again largely confined to warmer areas , having been supplanted by the brown rat ( " Rattus norvegicus " ) in cooler regions and urban areas .
 animal: brown rat
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: brown rat