I have two kids pretty close in age 7 and 8, a boy and a girl, and they are driving me bonkers because they fight about everything all the time. Agghhh... does anyone else have siblings that fight with each other?
Siblings or kids? I have 1 brother, he is 40 and I'm 37 - we don't fight anymore. I have seen some awful kids that fight all the time. Be patient, I bet they will be friends sooner or later.
You need to get away from that or set some rules. If you aren't sure how, I recommend watching Supernanny. It's amazing what you can learn from that woman.
I think it is fairly normal especially about that age. I would try to find something that the kids enjoy doing together...besides torturing each other like a board game or something.