Animal Cruelty

It does mean you have serious empathy and social awareness problems. It doesn't mean you will become a serial killer, but it does mean you have a fundamental personality disorder that enables you to cross lines others would not.

As horrible and lacking in empathy as Vick and dogfighters goes (and I agree that's plain awful) the kind of stuff described in the OP goes a step beyond IMHO. It's the difference between men shooting someone in anger and pulling off someone's fingers with a pair of pliers just to see what that's like. It's a special kind of deranged to be that cruel just for the very sake of the cruelty itself.