From “Watership Down” (chapter 18) in Watership Down: A Novel by Richard Adams:
Since leaving the warren of the snares they had become warier, shrewder, a tenacious band who understood each other and worked together. There was no more quarreling. The truth about the warren had been a grim shock. They had come closer together, relying on and valuing each other’s capacities. They knew now that it was on these and on nothing else that theirs lives depended, and they were not going to waste anything they possessed between them.