"Remember - every time your dog gets somewhere on a tight leash *a fairy dies and it's all your fault.* Think of the fairies." http://www.positivepetzine.com"
He is, I always say if someone wants to break in, they only have to bring a tennis ball and throw it for him
BUT he has a bad habit of grabbing the toy or your arm before you get it all the way thrown...!
The only true wisdom is in knowing you know nothing.