21928
Because the species " A. bogerti " was collected in the canopy of the forest , it is believed that deforestation and ongoing crop and livestock farming pose the largest threats to its survival .
 crop, livestock
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:
 crop, livestock