[BrianR]

As a pit bull owner, I have to chime in.

My pit is a sweetie but has this thing: he doesn't like children. At all. This is due to the fact that every child he has met thus far has hit/kicked/abused him.
Understandable, but not desireable. He is extremely territorial (typical for the breed) and protects me and my truck with his life.

So far, he has prevented at least one theft of truck (and load) that I can be certain of. He has also made many friends, including total strangers in guard shacks. His favorite is the Kane warehouse in Tunkhannock...they always give him a handful of doggie cookies. Whenever we go there, he leaps into my lap for his treats. No other time mind you, just there. Adults who are not messing with me or his truck are his friends. Kids are kept ten feet away, minimum, for safety. If this is not possible, I keep a muzzle handy. He is always leashed, thus limiting his lunge distance.

Oh yeah, he will attack any truck in motion too. I walk him far from travel lanes for this reason.

I refer to him as my "Active Theft-Deterrent System".

Here are two pics I took of my system in both "armed" and "standby, charging batteries" modes: