"The studies on this page reveal the prevalence of acts of animal cruelty among the most depraved and malicious criminals in society. "
|Animal abusers often commit other crimes. Download a larger version of the chart and reprint it (read our guidelines). © The HSUS|
- Of the nine school shootings between 1996 and 1999, half of the shooters had histories of animal cruelty.
- The largest single survey to date of serial killers found:
- 36 percent admitted to committing animal cruelty as children
- 46 percent admitted to committing animal cruelty as adolescents
- 36 percent admitted to committing animal cruelty as adults.
- A 2003 study found that of 354 serial killers profiled, 21 percent were known to have committed animal cruelty, although it is speculated that more might have committed unreported incidents of animal cruelty.
- A Canadian Police study found that 70 percent of people arrested for animal cruelty had past records of other violent crimes, including homicide.
- Of 332 animal cruelty arrests studied by the Chicago Police Department,
- 70 percent of suspects had arrests on felony charges (including two homicides)
- 86 percent of suspects had multiple arrests
- 70 percent of suspects had narcotics charges (68 percent of which were for sales or trafficking)
- 65 percent of suspects had been charged with battery-related violent offenses
- 27 percent of suspects had previous firearms charges
- 13 percent of suspects had been arrested on sex crime charges
- 59 percent of suspects were alleged gang members.
- A Massachusetts study of 153 animal abusers found that within 10 years of their arrest, 70 percent were charged with other crimes:
- 38 percent were charged with violent crimes;
- 44 percent were charged with property crimes;
- 37 percent were charged with drug offenses;
- 37 percent were charged with disorderly offenses. 
- An Australian study of convicted animal abusers found:
- 61.5 percent had been convicted for violent offenses against humans
- 17 percent had been convicted for sexual abuse
- 8 percent had been convicted for arson. 
1. Verlinden, S., Herson, M., and Thomas, J. (2000). Risk factors in school shootings. Clinical Psychology Review 29 (1), 3-56.
2. Ressler, R., Burgess, A., and Douglas, J. (1988). Sexual homicides: Patterns and motives. Lexington, MA: Lexington Books.
3. Wright, J. & Hensley, C. (2003). From Animal Cruelty to Serial Murder: Applying the Graduation Hypothesis. International Journal of Offender Therapy and Comparative Criminology 47(1), 71-88.
4. Boat, B. W., and Knight, J. C. (2000). Experiences and needs of adult protective services case managers when assisting clients who have companion animals. Journal of Elder Abuse & Neglect 12(3/4), 145-155.
5. Chicago Police Department (2008). Statistical Summary of Offenders Charged with Crimes against Companion Animals, July 2001-July 2004. Chicago Police Department, Chicago, IL.
6. Arluke, A,. and Luke, C. (1997). Physical cruelty toward animals in Massachusetts, 1975-1996. Society and Animals 5(3), 195-204.
7. Clarke, J. P. (2002). New South Wales police animal cruelty research project. Sydney, Australia: Unpublished report, New South Wales Police Service.