Sibling rivalry and abuse is a serious issue, with over 53% of children ages 3 to 17 having committed severe violence against their siblings. Sibling rivalry can escalate into abuse, which includes psychological, physical, and sexual abuse. If left unaddressed, abuse between siblings may even lead to extreme outcomes like siblicide. Common causes of escalating rivalry include siblings vying for parental attention or parents inappropriately comparing their children. To help prevent abuse, parents should praise cooperative behavior between children, avoid comparisons, not take sides in disputes, and intervene if conflicts become too heated.