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Most mammals that graze are large and have a long digestive tract ; guinea pigs have much longer colons than most rodents , but they must also supplement their diet by eating their feces ( coprophagy ) .
 food: supplement; food: coprophagy
Given options, please tell me the categories of all the listed entity words.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} 
 Entities: supplement, coprophagy 
Answer:
 food: supplement; food: coprophagy