That's something interesting about him too. At the dog park the do the baying of the hounds. You can hear them for miles, it's what they were bred to do. Even my pups, Sophie is AmStaff but her bark carries as well. I never heard Rocky make a sound even when I came to the door. I'd open it and he'd be doing his happy dance but no barking. He'd chuff smelling things but that was the only sound he made.