In chapter one what are the different ways in which the animals behave as they came into the barn?

There is a general hiearchy which the animals ender the barn.The dogs first march in, escorting the pigs following close behind:

At one end of the big barn, on a sort of raised platform, Major was already ensconced on his bed of straw, under a lantern which hung from a beam. He was twelve years old and had lately grown rather stout, but he was still a majestic-looking pig, with a...