RE: I want to know the TRUTH about this...
If you are looking for a hard and fast rule then you're not going to get one. There are very few things in this world that are that black and white. It depends on the animals and how much damage was done to the lung etc. etc. etc. etc. etc. So, yes I am sure they can live through some one lung shots. I have seen a human being get shot through one lung with a .357 magnum and live through it so I am sure they can do the same.