You are probably thinking of the USA's World War II propaganda animated cartoons. There were certainly lots of them!
Long articles could be (and have been) written on the adventures of Donald and Daffy Duck, Bugs Bunny, Gandy Goose and Homer Pigeon. In the last decade, most American propaganda cartoons have been re-released on DVD, so we can see them for ourselves; they are also on YouTube.
Volumes could also be written of the wartime funny-animal comic book and newspaper comic strip characters who fought the Axis, usually on the Home Front against saboteurs and hoarders. World War II's talking-animal propaganda novels are less well-known. In fact, they are forgotten today except in movie-adaptation credits. That’s too bad, as the books are still enjoyable reading.
