The climax occurs when the pigs become indistinguishable from the humans they once opposed, symbolizing the corruption of the original ideals of the farm.
The climax in 'Animal Farm' is when the animals realize that the pigs have betrayed the principles of the revolution and are now exploiting them just like the humans did. This moment shows the failure of the supposed utopia.
The climax of 'Animal Farm' happens when the pigs start walking on two legs and wearing human clothes, demonstrating that they have completely adopted the oppressive ways of the humans. It's a powerful moment that highlights the loss of the animals' initial hopes and dreams.