Does your dog bark constantly ?

Our Labrador Retriever, Bruce, barks a lot. He barks when there are people. He barks when something surprises him. Sometimes, it's tolerable, but because he is a really big dog, his voice is really big, too! Some of our neighbors are already complaining about the noise. Thank goodness they don't report us to community officials or worse, the police.

My friend already told me that I should try purchasing a shock collar to teach Bruce. I am considering it, although I think that it can be cruel. I just hope that when I indeed buy this, Bruce would learn his lesson and stop barking a lot.