A young Lisa Simpson cried and cried when her beloved first cat Snowball died. Homer and Marge tried to fool her by replacing the deceased feline with an identical one (thankfully, it was alive), but Snowball II could never fill the void left in Lisa's heart. Like most cats, Snowball enjoyed playing with yarn, petting, and coughing up large chunks of her own fur. While cause of death is unknown, foul play has been strongly ruled out.