Yep, they alert me and my gun will handle the rest if needed.
I still remember, lol. The Chihuahua running like an arrow shot from a bow, the big dogs behind . . . and me, thinking “oh, crap.”
A couple of years ago, my aunt in her 70s had her little mutt go nuts at 10PM in December. She grabbed her revolver and went to the door. A guy in a ski mask was trying to force entry. She told him to go or die, and he chose to go.
The cops told her a guy with that MO had been breaking in, beating old people and robbing them. So I guess that little mongrel dog, all 10 lbs of him, was a fine guard dog that night!