Last weekend I visited Bletchley Park, the home of modern day computing. There was a lot about the Second World War in it. And a lot about Alan Turing.
In addition to all the Enigma Code machines and the code breaker stories, there was a fascinating description of war rationing in Britain. Nylon stockings were not available and the only way British women could get hold of them was from American soldiers. To compensate for this early-days wardrobe malfunction, women discovered they could stain their legs with gravy or tea to make it look like they were wearing stockings. And so they did.
There was no further information on how cats and dogs would react to gravy-covered legs walking nearby. If I were a dog, I would howl.