Squealer is a pig in Animal Farm and the right-hand, or hoof, of Napoleon. Squealer becomes the prime liaison between the ruling class of pigs and the other animals. At first he does so purely through his persuasive tongue, but as the pigs gain power, Squealer adapts different methods. He borrows some filmmaking equipment left by Jones and begins screenings of propaganda films, narrated by himself. Squealer also adopts a natty monocle.

In the original novel, the primary model for Squealer is believed by many scholars to be the Russian newspaper Pravda, though similarities to German propaganda minister George Goebbels have also been noted.