Actions that are cruel to animals or lead to their death without a justifiable reason—for example, torture, torment, mutilation, poisoning, or abandonment—will seem to many as a clear sign that the person resorting to them has psychological abnormalities and could very well be just as capable of committing violence against humans. In fact, many studies have found a link between animal cruelty and various forms of violence. One of them also investigated the connection with the level of psychopathy in detail.
As demonstrated by one Swiss study, people who were cruel to animals in childhood are 3 times more likely to commit serious acts of violence, such as robbery, kidnapping, or assault, throughout their lives[1]. Another study conducted on two samples of women showed a link between the propensity for such treatment and proactive aggression, sadism, psychopathic predispositions, and traits of callous-unemotionality[2]. About 60% of individuals who state that they witnessed or participated in animal cruelty in childhood also report experiences of child abuse or domestic violence. As it turns out, animal cruelty is a “red flag” for domestic violence[3]. Finally, according to various studies, between 23% and 77% of households where intimate partner violence occurs also exhibit the presence of animal cruelty (and if threats to resort to it are added to actual cruelty, this figure becomes 21% to 89% of such households)[4].
People who are cruel to animals have, on average, higher scores for psychopathy. At the same time, the use of torture on animals is most strongly associated with psychopathy. The average score for individuals who committed such actions on the PPTS test was 13.04 points, while for those who did not, it was 10.19 points (an average difference of 2.85 points). The next strongest connection is the killing of animals (average difference of 2.65 points), followed by harming animals (average difference of 2.34 points)[5].
It can be confidently asserted that animal cruelty is indeed linked to a greater propensity for a person to commit violence against other people. There is also a significant link with psychopathic predispositions, which may indicate the presence of psychological abnormalities. Particular attention should be paid to impairments in the mechanism of violence inhibition, which some researchers use to explain the inability of certain individuals to perceive the suffering of animals, as well as a callous and dismissive attitude toward them[2].
