Even in the animal world of George Orwell, conflict is a constant presence. The battle for control between Snowball and Napoleon continues until Snowball leaves the farm. There is conflict between the humans, culminating in the two major battles--both won by the animals. The animals are angered when they are given forged banknotes as payment for the timber. Four pigs were executed after they were forced to admit that they were agents of Snowball. Several hens rebelled about having to give up their eggs. By this time, Napoleon had secured his strong position as head of the farm, and most of the animals' voices were silenced. Many questioned the apparent changes to the commandments, and several were horrified at the cruel retirement awarded to Boxer. They wondered about the pigs' growing human qualities--sleeping in beds, dressing in clothes, drinking and walking upright--but they mostly remained silent as the Animal Farm eventually evolved back to its origins of Manor Farm.