65585
It is widely agreed that the mallard ( " Anas platyrhynchos " ) is the ancestor of all breeds of domestic duck ( with the exception of the Muscovy duck ( " Cairina moschata " ) , which is not closely related to other ducks ) .
 mallard, Muscovy duck
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:
 mallard, Muscovy duck