My wife's parents adopted a Siamese cat while my wife was away at college. When my wife moved back home the cat became very fond of her, but that's another story. Twice the cat saved the family.
Once they had a rug catch fire that was over a heating vent. The fire was minimal, but the cat woke them up when it started to smoke.
Another time, my f-i-l collapsed in the bathroom with heart problems. The cat woke up my mother-in-law.
I could see Tam doing those things. The other cats wouldn't give a darn (i.e. they're NORMAL cats), but Tam seems to try to watch out for the rest of us...he just about goes crazy if one of the "family" is missing. When Halvah had to stay overnight at the vet, he paced the house for hours calling for her. He has a kind of odd cry he uses when he's looking for someone. I felt so bad for him!