There, round the long table, sat half a dozen farmers and half a dozen of the more eminent pigs, Napoleon himself occupying the seat of honour at the head of the table. The pigs appeared completely at ease in their chairs The company had been enjoying a game of cards but had broken off for the moment, evidently in order to drink a toast. A large jug was circulating, and the mugs were being refilled with beer. No one noticed the wondering faces of the animals that gazed in at the window...
Then, the applause having come to an end, the company took up their cards and continued the game that had been interrupted, and the animals crept silently away.
But they had not gone twenty yards when they stopped short. An uproar of voices was coming from the farmhouse. They rushed back and looked through the window again. Yes, a violent quarrel was in progress. There were shoutings, bangings on the table, sharp suspicious glances, furious denials. The source of the trouble appeared to be that Napoleon and Mr. Pilkington had each played an ace of spades simultaneously.
Twelve voices were shouting in anger, and they were all alike. No question, now, what had happened to the faces of the pigs. The creatures outside looked from pig to man, and from man to pig, and from pig to man again; but already it was impossible to say which was which.
George Orwell
Animal Farm
http://www.george-orwell.org/Animal_Farm/9.html