Whatever goes upon four legs, or has wings, is a friend. No animal shall wear clothes. No animal shall sleep in a bed. No animal shall drink alcohol. No animal shall kill another animal.
All animals are equal.
The pigs are more intelligent than the other animals and so they do the thinking part, the organization, on the farm. There are another main characters. Like the three horses Boxer the cart-horse, Cluver and Mollie the two mares, Benjamin, the donkey and some more. After they have milked the cows, which was necessary, they all together go to the fields to do the harvest. As they are finished the milk is gone.