It's mystifying to me...I can't imagine how Siberians made that list. :-/ Chows are on it (which I can see...they can be really aggressive), and pits too (understandable), and the rest of the dogs are just big. Maybe it's because they're large-ish and active and can potentially hurt someone?

Or maybe it's not for aggression at all. I've seen Kiba shred something in seconds when he's really motivated...maybe it's because the little miscreants are literally homewreckers! That'd sort of make sense.