The nation was shocked by the Casey Anthony verdict in which the jury said Casey was not guilty of first degree murder, aggravated child abuse and aggravated manslaughter. She was found guilty only in four counts relating to the lies she told the investigators.

Mixed reactions were witnessed inside and outside the courtroom, upon the announcement that Casey Anthony was found not guilty of first-degree murder of her daughter Caylee. Crowds of people got into a rage outside the Orange County court house and social media erupted in anger over the seeming miscarriage of justice.

But mothers killing their children are more common than we might think.

More than 200 women kill their children in the United States each year and three to five children a day are killed by their parents, According to the American Anthropological Association.

According to FBI crime stats in 1999, children under the age of 5 in the United States are more likely to be killed by their parents than by anyone else. Parents were responsible for 57 percent of these murders. Women commit less than 13 percent of all violent crime but they are responsible for about 50 percent of all parental murders.

10 Women who killed their children:

Andrea Yates, a Houston resident, killed her five young children on June 20, 2001 by drowning them in the bathtub in her house. On July 26, 2006, a Texas jury found that Yates was not guilty by reason of insanity.

Patricia Blackmon, at the age of 29, brutally murdered her two-year-old adopted daughter Dominique Bryant in Dothan, AL in May 1999. She was subsequently found guilty and sentenced to death.

Kenisha Berry killed her newborn son by duct-taping his mouth and arms, and placing him in a dumpster in 1998.

Debra Jean Milke, at the age of 25, was arrested for complicity in the murder of her only child, four-year-old Christopher Conan Milke. She was convicted of conspiracy to commit murder, first degree murder, kidnapping, and child abuse. In January 1991, Judge Cheryl K. Hendrix sentenced her to death.

Dora Luz Durenrostro killed her two daughters, age 4 and 9, and her son, age 8, when she was 34 years old in San Jacinto, California in 1994.

Caro Socorro, at the age of 42, killed her three sons, ages 5, 8 and 11, in Santa Rosa Valley, California in 1999.

Susan Eubanks murdered her four sons, ages 4, 6, 7 and 14, in San Marcos, California, in 1996 when she was 33. She was sentenced to death on April 5, 2002.

Caroline Young, at the age of 49, killed her 4-year-old granddaughter and 6-year-old grandson in Haywood, California.

Robin Lee Row was 35 years old when she killed her husband, her 10-year-old son and her 8-year-old daughter in Boise, Idaho in 1992.

Michelle Sue Tharp was 29 years old when she killed her 7-year-old daughter in Burgettstown (Washington County) on April, 1998.