"Must have been minutes ago, it wasn't there when I put the cat out, but when I got upstairs -"
Madam Rosmerta to Harry Potter and Albus Dumbledore before the Battle of the Astronomy Tower[src]

This cat belonged to Madam Rosmerta. It was being put out for the night one evening late in June 1997, when Rosmerta witnessed the Dark Mark above Hogwarts School of Witchcraft and Wizardry.