How does the behavior of the sheep affect the revolution?
In this extended allegory of the way the social world reacts to changes in political/economic power, Orwell reverts to a Jungian universal symbol here--sheep are stereotypically the followers, the masses, the passive subjects of herding, the populus that (in Marxism) is drugged by religion, that (in theoretical democracy) is the owner of one vote each, that in communism is the owner of the means of production--the "people" over whom the other "animals" of greater intelligence or physical strength or "class" rule and collect profit ("wool"). They have no power either over the revolution or the status quo. They are "sheep". Their condition will not change when political systems change, because the other "animals" are not interested in their welfare.