Black signifies the color of darkness. And since black cats are completely black they show darkness or evil inside of them. It is said that if it crosses your path the evil spirits follow you and...
They aren't, but I wouldn't fuss over it. I'm one of those people who believe in bad luck. But black cats aren't. They just think that because in the cartoons witches always have black cats. Well...
In ancient history, especially in the Fertile Crescent, there were opposing beliefs about the black cat, and how you viewed the animal depended upon your culture and religion. Ancient Egyptians...
No, black cats aren't bad luck. For people who believe in myths like this one believe in such things because they get paranoid and look for things do go wrong. When really it is just your mind...