Definitely a good thing, my little 6lb Pomeranian is a good watch dog in the sense that he will bark if anyone is around but not a very intimidating bark lol. I will definitely feel safer when walking at night this summer when it's really hot with bronco than just Bear alone. Clara sounds like a good dog!
Very true, especially with the larger guys. If they're usually quiet at night and all of a sudden the dog is barking or growling like crazy an intruder would have to worry about not only the dog or owner but neighbors being awoken etc.