Who gained leadership of the animal's and why?

In many narratives and fables, leadership among animals often reflects human traits and societal structures. For example, in George Orwell's "Animal Farm," the pigs, particularly Napoleon, gain leadership due to their intelligence and ability to manipulate the other animals. They exploit the animals' naivety and desires for equality, ultimately establishing a regime that mirrors the oppression they sought to escape. This dynamic serves as a critique of power and corruption in human society.