Cat Nights

Space.com had a nice article about Cat Nights and feline constellations. Their lead off paragraph, however is a great idea for a short story.

Not too many people are aware of the term "Cat Nights," which goes back to the days when people believed in witches. Old Irish legends have it that a witch could turn herself into a black cat eight times, but on the ninth time she couldn’t change back. Supposedly, this is where we get the saying, "A cat has nine lives."