Correct...except no, they really aren't alive. They're just...walking, hungry corpses that feed on live human flesh. Please don't try to imagine it, it's pretty horrible. You don't want that visual, trust me, man.

They can, you have to kill the brain. A headshot will do it. Anything that'll kill the brain will kill the person. So...when people you love are killed, you have the pleasure of killing their brains, in addition, so that they don't come back a monstrosity. It's literally the worst.