75840
They also suggested that the feet of multituberculates would have been plantigrade ( the sole touching the ground ) at rest , but digitigrade ( the sole not touching the ground ) when jumping and running quickly ; they dismissed the idea that the forelimbs of multituberculates and other early mammals were more parasagittal than their hindlimbs .
 plantigrade, digitigrade
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:
 plantigrade, digitigrade