Grampa Simpson: "Death stalks you at every turn!"
Lisa Simpson: "Grampa!"
Grampa: "Well, it does. Aaah! Death! There it is. Death!"
Lisa: "It's only Maggie."
Grampa: "Oh, yeah. You know, at my age, the mind starts playing tricks. So, aaah!
Death!"
Lisa: "That's only the cat."
... or was it
Oscar, feline harbinger of doom (from SFGate):
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.