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BARK, BUT NO BITE INVENTOR: ROBERT FAIRALL Dogs are great theft deterrents; they also tend to smell bad and demand Richard Simmons levels of affection. The Barking Bone aims to scare away the bad guys while still keeping canine-hating homeowners sane. Fairall implanted a motion sensor inside a giant, apparently gnawed, dog bone made of solid resin. When the sensor is tripped, a sound chip emits a low growl followed by a torrent of ferocious barking.