In this exciting text, some pigs organize a revolt against a drunk farmer. They write songs and compose a cool manifesto, build a windmill, and overtake the humans. But soon after they rise to power, they kill off a bunch of animals and start smoking, wearing pants and playing poker.
In other words, the pigs give up on being miserable barnyard animals only to turn into miserable humans. The ecocritical moral of this story is: act like a human and things get miserable.
Now, consider this question: How do our stereotypes about pigs influence our reaction to Orwell's use of them as his work's central villains?