Is it normal for my little brothers to attempt to kill each other?
My two little brothers, aged 7 and 9, fight every day and attempt to kill each other, and beat each other up until they're tired. It's really really weird for me, because the older one is very intelligent and usually quite mature, so much that people think he's at least 12. But he's always the one who initiates the fight and he's the one who attempts to kill my little brother.