Cat Ghoul

Or maybe he likes the electric blanket:

Oscar the cat seems to have an uncanny knack for predicting when nursing home patients are going to die, by curling up next to them during their final hours. His accuracy, observed in 25 cases, has led the staff to call family members once he has chosen someone. It usually means they have less than four hours to live.

"He doesn't make too many mistakes. He seems to understand when patients are about to die," said Dr. David Dosa in an interview. ....Dosa said Oscar seems to take his work seriously and is generally aloof. "This is not a cat that's friendly to people," he said.

Oscar is better at predicting death than the people who work there, said Dr. Joan Teno of Brown University, who treats patients at the nursing home and is an expert on care for the terminally ill

She was convinced of Oscar's talent when he made his 13th correct call. While observing one patient, Teno said she noticed the woman wasn't eating, was breathing with difficulty and that her legs had a bluish tinge, signs that often mean death is near.

Oscar wouldn't stay inside the room though, so Teno thought his streak was broken. Instead, it turned out the doctor's prediction was roughly 10 hours too early. Sure enough, during the patient's final two hours, nurses told Teno that Oscar joined the woman at her bedside.

...If Oscar really is a furry grim reaper, it's also possible his behavior could be driven by self-centered pleasures like a heated blanket placed on a dying person, Dodman said.