The animals, now with barely any food, begin working on the windmill again, this time with thicker walls. They all are inspired by Boxer, the hardest worker of them all.
The pigs order dogs to kill any animal that confesses to wrongdoings and working with Snowball. All other animals are completely shaken up about it and don't believe that such a thing could happen on Animal Farm, but it did.
The humans, with Mr. Frederick as the leader, attack Animal Farm and the animals attack back. Many animals are killed, others are injured including Boxer.
Animal Farm becomes a republic and Napoleon is elected president.
Boxer becomes even more ill than he was before and a cart comes for him that is from a glue making factory. Benjamin reads this and says he is going to be slaughtered, but Napoleon and Squealer deny it. Boxer soon dies, in a "hospital" as claimed by Napoleon.
Years later, pigs have broken all commandments and made all the other animals do it also. The animals now wear clothes, walk upright, and act like humans. They even invite humans to the farm and promise to only have peaceful interactions from now on.