It is very true that siblings can be either the best of friends or they can be their own worst enemies. As long as there is more than one child in the house sibling rivalry is inevitable. This is perfectly normal and can lead to better bonding. But it may become a problem if this rivalry becomes toxic. Most of the time this rivalry starts when a second child comes to the house. The first-born feels threatened and starts to compete for everything from toys to attention. Parents are often at the receiving end and they have a tough time