If performing CPR alone, give your dog artificial respiration after each set of 15 compressions. 1  Begin by sealing the dog’s lips. 2  Place your hand over the dog’s muzzle and ensure the mouth is completely closed. 3  Next, place your mouth over the dog’s nostrils and blow gently, watching for the chest to lift and expand. Only compress 1/4 to 1/3 of the chest width. 2  Repeat compressions at a quick rate of 15 per 10 seconds. * 3 For smaller dogs, use your thumb and fingers to squeeze the chest to about a 1/4 or 1/3 of its width. 4  Repeat this at a slightly quicker pace than for larger dogs, aiming for 17 compressions in 10 seconds.