How do you stop dogs from barking?

Find out why they are barking, are they in discomfort? are they trying to alert you of something important? if they're sleeping outside, maybe they're rather be in the house with you instead or there are other small animals running around that they're barking at. We kept all 3 of our dogs in our house, and never really had a problem with them barking at night at all. They had dog beds in our bedroom and slept like logs. Well, our beagle did snore quite loud though.