God, I remember when I had to have my cat put down...so long ago now. She was already old, and suffering from kidney problems, as old cats do, but a dog chased her, and her tendon snapped. Had to have her put down. I couldn't go to the vet to watch.
Sorry to hear about your cat, Dotsie.
Four minutes? That's ages! What if I get bored? I need a television, a couple of books. Anyone for chess? Bring me knitting.
-The Eighth Doctor, defiant in the face of death, in Doctor Who: The Night of the Doctor