On another note, who the heck are these people? He said he made them kill the cat because they "needed to learn how to kill"? How scary and disturbing is that? That's... part of the psychological profile of a serial killer.
You don't have to be taught to kill, anyhow. Almost anybody will do so in defense of themselves or those they love, and that's the only time it ought to be done.
Why aren't they bringing child abuse charges against this guy, in addition to the "neglect" charges? My stepdad used to smack me around, but I would rather be beaten up a hundred times than be forced to kill a cat.