Decades ago, a now-defunct awards ceremony handed trophies to superstars such as Audrey Hepburn’s cat in ‘Breakfast at Tiffany’s’ and the hero of the Francis the Talking Mule franchise. As the canine star of ‘Anatomy of a Fall’ becomes the darling of this current Oscar season, Clarisse Loughrey digs into one of Hollywood’s stranger tales of industry back-patting