In Animal Farm, what is significant about how the animals arrange themselves as they gather to hear Major?

Significantly, Old Major speaks on "a sort of raised platform" above the other animals, immediately undermining by virtue of his physical position the equality about which he will speak. In addition, it is also important that even though at first there is some order to the gathering, pigs in one place, ducks in another and so on, very quickly that order collapses as  "the dogs suddenly chase the rats," giving lie to the comradeship Old Major speaks about so eloquently.