how has Napoleon become indistinguishable from mr. Jones?

One day the pigs and humans begin to play poker, and a fight erupts when Napoleon and Pilkington both put down the Ace of Spades at the same time. As the animals witness the pigs and humans quarreling over their poker game, they cannot distinguish between them. They both walk on two legs, wear clothing, eat, drink, and play cards. Napoleon also considers himself the farmers' equal and behaves in the same way they do. The pigs' transformation is complete when they adopt two-legged walking. They treat the animals in the autocratic manner of Jones. In this sense, the story has come full circle.