A dog's bark can be between 60 and 110 decibels or more in volume. The loudest dog in the world, as of 2013, had a bark that was 113.1 decibels.
Most dogs bark between 80 and 90 decibels in volume, about as loud as a shouting human. Decibels are a measure of sound intensity, not absolute volume. Noise levels in kennels can be between 95 to 115 decibels, due to the acoustic properties of the architecture. Dog barking at that level is considered an occupational hazard, as levels above 85 decibels can damage hearing if exposure to the noise is prolonged.