Michael Jackson's pet tiger has died. Thriller, the King of Pop's 13-year-old former pet, died of lung cancer at actress-and-activist Tippi Hedren's wildlife preserve in California earlier this month. ''She was about as tough a tiger as we have known here. She ruled over her brother Sabu. She was the queen. We were fascinated by her dominance.'' Thriller and Sabu lived at Michael's Neverland Ranch until he moved out in 2006 and asked Tippi to take the big cats to her Shambala Preserve.