The Animal Cruelty–Violence Link

Research on the connection between animal abuse and interpersonal violence

71%

Of domestic violence victims report partner also harmed pets

2016

FBI began tracking animal cruelty as serious crime

More likely: childhood animal abusers commit interpersonal violence

What Is the "Link"?

The "Link" — often capitalized by researchers — refers to the well-documented relationship between animal cruelty and interpersonal violence. Multiple decades of research across criminology, psychology, and social work have consistently found that:

Individuals who abuse animals are significantly more likely to commit or have committed violence against humans
Animal cruelty in childhood is one of the strongest early warning signs for later violent offending
Animal abuse frequently co-occurs with domestic violence, child abuse, and elder abuse in the same households
Pet abuse is used as a tool of coercion and control in intimate partner violence

The Link research has transformed how law enforcement, child protection services, domestic violence shelters, and public health agencies approach animal cruelty — no longer as a minor property crime but as a serious indicator of broader violence patterns.

Key Research Findings

🔬 Serial Violence Studies

Studies of violent criminals have found high rates of childhood animal cruelty. FBI research found that 75% of school shooters had prior histories of animal cruelty. Studies of serial murderers (including Bundy, Dahmer, and others) consistently find childhood animal abuse as a common precursor.

👨‍👩‍👧 Domestic Violence Co-Occurrence

Research consistently finds that 71% of women entering domestic violence shelters report their partner had threatened, harmed, or killed a pet. A National Coalition Against Domestic Violence survey found that 89% of women who had experienced domestic violence also witnessed their children abusing animals.

🐕 The "Withholding Pet" Barrier

Studies have found that 25–50% of domestic violence victims delay leaving abusive relationships because of fears about leaving pets behind. Abusers use pets as leverage — threatening harm to animals to prevent victims from leaving or reporting.

👶 Childhood Development

A landmark longitudinal study (Kellert & Felthous, 1985) found that men convicted of violent crimes were 5 times more likely to have abused animals as children than non-violent criminals. The developmental link between childhood animal cruelty and adult violence is one of the most replicated findings in forensic psychology.

Mechanisms: Why Are They Linked?

Researchers have proposed several mechanisms to explain the connection between animal cruelty and interpersonal violence. These are not mutually exclusive:

Graduation hypothesis: Animal cruelty is practice for violence against humans — individuals who abuse animals may escalate to harming people. This is the most commonly cited but not the only mechanism.
Deviance generalization: Both animal cruelty and interpersonal violence stem from common underlying factors — low empathy, impulsivity, callousness — rather than one causing the other. Animal cruelty is a marker, not necessarily a stepping stone.
Social learning: Witnessing violence — including violence against animals — normalizes violence and teaches that power involves domination. Children who grow up in violent households where animals are also harmed learn that violence is acceptable.
Control dynamics: Perpetrators of domestic violence use animal abuse instrumentally — to control, threaten, and punish partners and children. The animal cruelty is a deliberate tool, not incidental.
Empathy deficit: Animals are often the first victims when empathy is impaired — easier to harm because they cannot report to authorities and are legally property in most jurisdictions.

Policy Responses: Cross-Reporting and Cross-Training

Recognition of the Link has driven significant policy changes in the US and internationally:

FBI Crime Classification Change (2016)

In 2016, the FBI reclassified animal cruelty from a minor property crime to a Group A felony offense — placing it in the same category as homicide, arson, and assault. This change enabled the FBI's National Incident-Based Reporting System (NIBRS) to track animal cruelty nationally for the first time, providing data to study the Link systematically.

This reclassification was advocacy driven — pushed by the National Sheriff's Association, Humane Society, and Link researchers over more than a decade.

Cross-reporting laws: More than 20 US states now have mandatory cross-reporting laws requiring veterinarians and animal control officers to report suspected child abuse, and/or child protective services to report suspected animal abuse observed during investigations. These laws close the investigative gap between agencies.
Safe Haven programs: Domestic violence shelters increasingly partner with animal shelters or foster networks to temporarily house the pets of abuse victims, removing the barrier that prevents victims from leaving. The Safe Havens Mapping Project documents over 1,500 programs in the US.
Animal cruelty prosecution upgrade: Following the FBI reclassification and state-level advocacy, many jurisdictions have upgraded animal cruelty from misdemeanor to felony — enabling law enforcement to take it more seriously.
Cross-training programs: Law enforcement, veterinarians, social workers, and domestic violence counselors now receive training on recognizing signs of the Link in cases they encounter.

Implications for Animal Welfare Advocacy

The Link research has important implications for how animal welfare is positioned in public discourse:

Building coalitions: The Link creates natural coalitions between animal welfare advocates and domestic violence organizations, child protection services, and law enforcement — groups that might not otherwise see animal welfare as a shared concern.
Political traction: Animal cruelty legislation gains political support from legislators focused on violent crime and public safety, not just animal welfare. This has driven passage of animal cruelty felony laws in all 50 US states.
Public health framing: Framing animal welfare as a public health and safety issue rather than purely an ethical one reaches audiences who might not respond to animal welfare arguments alone.
Children's programs: Humane education programs in schools — teaching empathy toward animals — are now argued to also prevent the development of callous attitudes that lead to interpersonal violence. Animal welfare and violence prevention become aligned goals.

Humane Education

One of the most hopeful applications of Link research is in humane education — teaching empathy toward animals as part of social-emotional learning:

Programs like the AHA-sponsored Pet Care Club, Roots & Shoots (Jane Goodall Institute), and Second Chance (prison animal programs) teach empathy and responsibility toward animals
Research suggests that children who interact positively with animals develop higher empathy scores and show reduced aggression
Animal-assisted therapy programs using the human-animal bond therapeutically have shown promising results for at-risk youth
School-based humane education reaches children before patterns of cruelty become entrenched

Limitations and Caveats

The Link research is robust but should be understood carefully:

Correlation, not causation: Animal cruelty and interpersonal violence are correlated and share common risk factors; this doesn't mean all — or even most — children who harm animals become violent adults
Definitional issues: Studies define "animal cruelty" differently, making comparisons difficult. Killing insects differs from torturing mammals; lumping them distorts findings.
Childhood animal cruelty context matters: Some childhood "animal cruelty" represents developmental curiosity, peer pressure, or trauma responses — very different from predatory sadism. Assessment and early intervention are more appropriate than criminalization.
Selection bias: Studies of incarcerated violent offenders may overstate the link if animal cruelty detection is higher among those already under scrutiny