Picking a dog-

[Moonliner]

I'd suggest a Jack Russel Terrier. Small enough to make a good lap dog but tuff enough to protect your home from grizzlies.

Our little Jack is a cuddly lap dog to all of us but also faithfully protects our home from bad people. Of course he also "protects" it from the mailman, the neighbors, other dogs, squirrels, falling leaves and I suspect any air currents that just don't look right to him.

We feel very safe.