They are on the same page since one can view them as merely different states of the same entity.
Implementation is yet to be determined.
In addition, we should add that they start moving when they get hungry. Piglets, I think, should be hungry all the time with only a brief pause after consuming an acorn. The more acorns they eat, the fatter they get, but moving around requires energy expenditure. Fatter pigs take more energy to move than little pigs. Pigs of all sizes consume energy all the time.