Another story I heard on the morning radio, this morning, in fact...
Ha! Supposedly this cat is more accurate in predicting death than the doctors, and when he goes to visit an elderly patient, he lingers around for a while before the patients seem to pass away.
They say every patient Oscar has visited has died within four hours of the cat's stay.
"The Cat of Death"
Edit: I just realized this exact story is already in 'Tilted Pets'
http://www.tfproject.org/tfp/showthread.php?t=121445