How abot this
http://www.bullygang.com/images/cruella.jpg
Or for a real serious protector
http://www.dogbreedinfo.com/anatolianshepherd.htm
If you serious about a Gun (I would advice against it simply because of the statsistics) then Get a Pump shotgun their is nothing as chilling of a sound as the racinig of a pump to scare the !@# out of any intruder.
For CCW go titanuim..