To what age group would you recommend this book?
The book Animal Farm is often assigned in the 6th-8th grade levels (Jr. High/Middle School), but it is quite obvious that Animal Farm appeals to just about any age group who is familiar with topics such as treachery, exploitation, classicism, despotic governments, the nazis, the Napoleonic wars, and any other theme of government abuse, separation of classes, wars against any specific group of individuals.
It deals also with peer pressure, divide and conquer, the abuse of power, and the human reality of propaganda which leads people to follow the wrong political agendas.
Personally I would recommend this book because it shows the reality of absolutism and the ridiculousness of those power hungry politicians who destroy civil life. It shows what ambition does to people and it does it in a colorful and metaphoric way that appeals even people who do not like to read a lot.