An important lesson shone in the book
Animal Farm is you can't always be a blind follower, sometimes you have to stand up and be a leader.
In Animal Farm the animals are always following Napoleon which isn't a good thing because he makes them work hard with almost no food. The ruling is unfair and no one is willing do do something about it. If someone had stood up to Napoleon maybe others would have joined in. They could have started another rebellion, and could have been free from his harsh dictatorship, but no one would stand up.