Cats, cat videos, funny videos of people giving thoughts to their cats…whatever it is, if there’s a cat in it, people are down. They think the behavior grew out of their connection to humans, since cats don’t meow when interacting with other cats. As early as the Middle Ages, superstitions arose surrounding black cats being the reason for the plague pandemic. In some countries, black cats are considered good luck. New brides are given black cats to bless their marriages in England, and in Japan, they’re considered particularly lucky for single women.