Harley Had a Kitty Once 

Harley managed to knock Catwoman unconscious from behind. At the cat food cannery, Harley taunting a bound, gagged and enraged Catwoman. Catwoman is tied down to an assembly line, set to be ground up and mixed with supplies of cat food.
Harley Quinn: I had a kitty once. You know, they don't always land on their feet.
Catwoman struggles fruitlessly against her bonds.
Harley Quinn: Look on the bright side! Tomorrow, you'll be feeding hundreds of hungry cats! The fun start as soon as Mr. J comes back!
Catwoman, from Batman the Animated Series episode Almost Got 'Im