I have seen a few animals die from arrow wounds to the lungs. One lung can be a very slow death or even possible survival. 2 lungs death usually occurs in under a minute, well at least unconsiousness. You will usally here a gasp and then blood will spurt out the mouth. Most hunters I have talked to report the animal down in less than a 100 yards at a dead run. ( this is less than 10 seconds for a deer)