Its plucky hero piglet Lucky, for instance, revolting against the devious pig overlords who overthrew, then mimicked, the human oppressors. Of course, none of these appear in the original Animal Farm. Orwell by way of Aardman Animation’s Chicken Run (2000), or the animatronic marvel Babe (1995). To give the film its due, there’s a canny shift in prime pig villain Napoleon’s power play here. In Orwell’s text, once the four-legged creatures banish their hapless farmer Jones, the subsequent two-legged threat centres on the pigs themselves learning to stand upright, repeating the cycle of exploitation and tyranny.