Is there any evidence of a connection between animal cruelty and human violence?
Absolutely. Many studies in psychology, sociology, and criminology during the last 25 years have demonstrated that violent offenders frequently have childhood and adolescent histories of serious and repeated animal cruelty. The FBI has recognized the connection since the 1970s, when its analysis of the lives of serial killers suggested that most had killed or tortured animals as children. Other research has shown consistent patterns of animal cruelty among perpetrators of more common forms of violence, including child abuse, spouse abuse, and elder abuse. In fact, the American Psychiatric Association considers animal cruelty one of the diagnostic criteria of conduct disorder.