Cases in which cruelty to animals is due to a deliberate wish to be cruel (as opposed to neglect), are known as zoosadism, and have been repeatedly linked via research with abuse and cruelty to people (including the more sensationalist examples of torture and killing).
Psychological studies have shown that individuals who take pleasure in inflicting harm on animals are more likely to do so to humans. One of the known warning signs of certain psycho-pathologies, including anti-social personality disorder, also known as psychopathic personality disorder, is a history of torturing pets and small animals, a behavior known as zoosadism.
And your point is....???
Baron Max