Zeke is pretty good about not barking too much, but when he goes out to the back yard and wants to come in he does let us know. Also, if he trees a squirrel, he could bark at it for hours and we have to tell him "Zeke, no bark" or else he might disturb our neighbors. Right now he just saw the milk delivery person and had to bark at him. His favorite person is the postal carrier because she brings him treats and so every afternoon he requests to go see her.