All the animals acted different. Let me give you a short survey. First, Napoleon took the pups of Jessie, Pincher, and Bluebell and presumably trained them. So, when the pups became dogs, they were fiercely loyal. They were guard dogs in essence. Boxer, the workhorse also became very loyal. He worked and worked himself to ruin. Eventually, he was sold to a glue factory. We can say that Boxer could not think for himself; he was brainwashed. He had a motto that summed up his view:
If Comrade Napoleon says it, it must be right . . . .
Mollie, another horse, had a different approach to the new life on Animal Farm. She missed wearing ribbons and interacting with and getting pet by humans. He is quote that shows what Mollie is like:
The stupidest questions of all were asked by Mollie, the white mare. The very first question she asked Snowball was: "Will there still be sugar after the Rebellion?"
It is no wonder that she fled. Clover, on the other hand, feels and knows that something is off with the principles of animalism and can even sense the hypocrisy of the pigs, but cannot point to it. She complains that she cannot remember the commandments.
Benjamin, the donkey, knows that something is wrong, but he does not do anything. He has a decidedly pessimistic view of life. He believes that life will be miserable no matter who is in charge. He is probably the most perceptive. Here is a quote:
As Clover looked down the hillside her eyes filled with tears. If she could have spoken her thoughts; it would have been to say that this was not what they had aimed at when they had set themselves years ago to work for the overthrow of the human race. These scenes of terror and slaughter were not what they had looked forward to on that night when old Major first stirred them to rebellion.
Obviously, the pigs, like Squealer, play along. In fact, Squealer is the great propogandist, and with his golden tongue he seeks to persuade the other animals of the nobility and goodness of the rebellion and the actions of Napoleon.
Here is one final example. Moses, the raven, plays a minor role, but he is important because he speaks of Sugar Candy Mountain. In a sense, he speaks of a paradise to which the animals can strive to go. In a sense, he represents religions and how it can be used to dull the mind of the masses and keep the in check.