Theme of Power: In Animal Farm, the sheep are refered to as the less intellegent animals, but this doesn't make them useless because they help out in many cases.We need these animals because they help support everyone in situations like the rebels and the harvests. The sheep don't necessarily have a special power, but without them, things would be alot harder on the farm.
Theme of Pride: Pride can be both beneficial and harmful to animals and humans because in a way it can reunite them, but at the same time it can create difficult problems.At the begining it starts off as good, but leads to a disaster.The pigs feel proud compared to the other animals because they have an advantage over the other animals which is intelligence.