Animal Farm is full of irony. The main irony is in the fact that the animals are worse off after they revolt against the human owner and his friends than they were before. The only animals that benefited in the long run were the pigs, who correspond to the Bolshevik bosses who seized more and more power after the Russian Revolution. It is also ironic that the pigs began to trade with the human farmers after it was declared as a fundamental principle that animals would have nothing to do with humans. Another irony is that the big, dedicated, hard-working horse named Boxer worked all his life to improve conditions for the other animals and was sold for his hide and bones after he became too old to work. He had been expecting to have the secure retirement he deserved. The changes in the slogans are ironic, notably that all animals are equal but some are more equal than others. It is ironic that the harder the animals worked, the less they had to eat and the more miserable their living conditions became.