[heartwood]

You don’t do CPR unless the patient is in no pain - i.e. unresponsive, pulseless, dead as far as you can tell.

Of course the dog can’t figure that out. Sad story.

[Pollster1]

You don’t do CPR unless the patient is in no pain - i.e. unresponsive, pulseless, dead as far as you can tell.

True, but before CPR, it's not necessarily a calm drop to the floor. I've seen anxiety, followed by pain in the chest and radiating to other parts of the body - a dog would likely get agitated over watching it happen (I was upset watching it!). Then the victim falls to the floor and you do CPR, which probably looks wrong to a dog.