Sibling rivalry is a common challenge in families, manifesting through frequent squabbles during pressure points like meals, bedtime and car trips. Developmental paediatrician Dr Billy Garvey explains that while some conflict is normal, daily fighting can have lasting negative consequences on sibling relationships. The key to managing sibling conflict involves parental co-regulation, building problem-solving skills during calm moments, creating protected one-on-one time with each child, and teaching pro-social skills like empathy and conflict resolution through play.