How can I revive my dogs if wounded / unconscious / not breathing / etc. .. ?

CPR on dogs ?
any methods ?
I’ve tried some, because the case has occurred.
Both when a couple of my puppies were born and their mother was too lazy to lick them and when one of my older dogs was unconscious and had gone limp: no breathing, no pulse.
rubbing the throat and chest upwards seems to be efficient, but I need something more immediate.
cheers…