A man and his dog visited Auntie Wainwright in one episode. He was the 100th person to pass the shop. "The wife'll go crackers when she knows what it cost. The old witch even sold something to the dog!" I think it was a 1990s Foggy episode....?
There was a dog in The Mysterious feet of Nora Batty, when Foggy had suggested they roll their trousers up round the next corner. It chased them down past Nora's house.