It’s a split decision on my black cat, who thinks I can’t see her. Is she good luck or bad luck? Great Britain, Scotland and Japan view black cats as a sign of good luck or prosperity. In parts of Europe and Western cultures, we associate them with witches and bad luck. Germans and pirates are split between good and bad luck, depending on how the black cat moves in relation to a person. All I can confirm is that it is a bad omen if my cat’s auto feeder is not full at 5:30 a.m.