Former Grey's Anatomy doc Katherine Heigl is still saving lives -- but this time around, they're the lives of the cats and dogs she helps rescue via her Jason Debus Heigl Foundation. Named in honor of her animal-loving brother, who was killed in a car accident when he was 15-years-old, Heigl's foundation works with other animal rescue groups, as well as an internal group known as the Heigl Hounds of Hope, to spare the lives of cats and dogs scheduled to be euthanized because of animal shelter overpopulation. The group then tries to find the sweet animals happy homes, and also funds free spay/neuter days to help prevent overcrowding. "There was this beautiful little pit puppy that had been used as bait in dogfights," Heigl told Variety. "He had a broken neck and had to have a cast from about mid-neck to mid-back. Today, Bucket is six months old. He's happy and joyful. He's just this crazy, wacky guy."