What problems are encountered as the animals begin to discuss the coming rebellion?

Even though the pigs explain the theory of Animalism, in which the animals will reject human ways and work together for their own benefit, the other animals have a hard time understanding or imagining any other world than the one they have always lived in. They fear they will starve without Farmer Jones to take care of them, forgetting that they are the ones who do the work of the farm. They also have trouble with the idea that they are working towards a goal they might not see come to fulfillment in their lifetimes, asking why they should care about what happens after they are dead. When the pigs tell them the revolution is inevitable, they wonder why they have to nevertheless work for it.
Molly, the white mare who has internalized human values, doesn't understand why she should have to give up such pleasures as ribbons in her mane and sugar. Moses, the raven, has a hard time abandoning his faith in SugarCandy Mountain, a place he tells the animals they will go after death, and putting it instead in the revolution.