How does Napoleon seize power?

Napoleon trains a litter of puppies to be loyal to him: when they are fully grown, he uses the dogs to chase Snowball, his main rival, off the farm. Napoleon justifies his takeover by telling the other animals that Snowball was a traitor secretly working for the human farmers. Squealer makes confusing and manipulative arguments to convince most of the animals that Napoleon is telling the truth, while fear of Napoleon’s dogs keeps any doubters from speaking out.