Can a dog with a black dog and a white chest do harm to its owner?

This is superstition. There is no scientific basis. Black dogs with white hair on their chests are genetically determined and have nothing to do with luck. Think about it. If a black dog has a white chest, if I give him an all-black dog, he will prosper. Obviously not. Everyone in the village says that cats are poor and dogs are rich. What if a black dog with a white chest comes to his house?