Quote Originally Posted by clara4457
While I agree many times it is the owner's that are the cause of the aggression, I also think that some dogs (not breeds - individual dogs), can be snarky with people outside of their immediate family.
Our dog Princess was like that. We could walk her on leash and on the street you could come up and pet her. As we walked along chatting with you, we'd reach home and step into our yard. Now she felt she had to protect her property. She would lunge for your jugular! No fooling around on her part, you were trespassing (in her mind). Very deceptive. After the first couple times we realized and had a better hold on her. This was years ago when they pumped gas for you. We couldn't get gas with her in the car; she wouldn't allow the pump man to touch HER car. On vacations, we'd have to get her out on a leash and walk away while they did the pumping! It was also a problem as we took her camping with us. She'd decide the campground was friendly territory but don't set foot in our camp SITE! Oh man, that dog had us on our toes all her 16 years with us.

I also wasn't too sure about what they considered dangerous behaviour. Most PTer's understand that some breeds, and some individual dogs, have a high prey drive. And while I would hate for any dog to kill a cat, not sure that should make the list. But that is a separate issue to the registry idea itself.