What further examples of the difference between the pigs and the other animals occur in chapter 3

The pigs supervise the others but do not participate in the manual labor.

The pigs set up a study center for themselves in the harness-room, where they study trades using Mr. Jones’s books.

As time goes by, the pigs begin to increase their control over the other animals. For example, when Jessie and Bluebell give birth to puppies, Napoleon takes them to an isolated loft where he can teach them. Napoleon believes that educating young, impressionable animals is more important than trying to re-educate older ones.

The pigs are mixing the cows’ milk with their food. When the wind knocks ripe apples out of the orchard trees, the pigs claim the right to take them all, as well as the bulk of the coming apple harvest. The pigs claim that they need milk and apples in order to power their “brainwork.” Squealer says that, were the pigs to stop eating milk and apples, they could lose their powers of organization and Mr. Jones could come back.