Sibling rivalry is natural, and it is expected in every family with more than one child. However, sometimes things get too serious and parents have to deal with the problem. In fact, the sooner parents handle the problem, the better.
Here are some simple ways to deal with sibling fighting:
Never Point at Just One
It takes two to tango! Never hold only one child responsible for a problem. Accusing just one, even if it is his/her fault fuels more fury. Doing so will give the other kid a reason to call names and bully the child in question. Therefore, handle the problem by disciplining both of them together. Set up rules that will keep them both in check. For example, if either misbehaves, everyone goes to bed early. Be clear that both will be held accountable, it doesn't matter whose fault it was.