People who are better with animals than they are with other human beings are sociopaths. At the core of this incontrovertible fact is the issue of control. If you do not have decent social skills or sufficient intellectual capacity, then the easiest relationship to cultivate is one of pure dominance. This is when a sociopath turns on an animal, most conveniently one that he owns and has made dependent upon himself.
When such people start making clothes for their dogs, it's time to withdraw.