How old do kids need to be to actually realize what's happening when killing an animal and to start shooting themselves. How old were your kids? I was late getting into it, around 12 I think. My kids go with me squirrel hunting alot and watch. I have one daughter that could physically shoot a light gun or crossbow with a rest this coming season. I'm wondering at what age does it truly sinks in what's happening? I no kids mature different but when should u think about letting them start?