It is unlawful for black cats to roam without bells on Friday the 13th.

The Law

The town of French Lick passed a strange ordinance in 1939 requiring all black cats to wear a bell on their collars every Friday the 13th. The law was enacted to alleviate the superstitions of townspeople and reduce bad luck. If your feline friend crosses a path on this cursed day, they must jingle to give pedestrians a fair warning.