PHILADELPHIA (CBS) -- A dog's bark is not as simple as you might think. There are some ways that pet owners can decode what their dog's bark truly means. Dogs may have heightened responses to some ...

Beyond barking, our canine companions communicate with a fascinating range of noises, each telling its own story. Indeed, dogs are full of surprises, and the sounds they make are no exception.

While living in a city or town, there are times when we have been woken up at night by the sound of street dogs barking. For a lot of people, nighttime barking feels random, irritating or frightening.

Just as humans use different tones of voice and speech patterns to communicate, so too do dogs convey meaning through barking. For those who wonder how to identify one bark from another, pet behavior ...