“Pax”, our big ninety pound dog, likes to hear his own voice.  He will lumber out into our yard barking every step of the way until he reaches the far end and then make sure no one can pass our yard without him commenting.  As I said, he likes the sound of his own voice.  He is the most vocal of our four dogs.  And also the elder.  All four dogs will run out into the yard to do their business.  And he will do it right away and shortly after will bark in front of the entrance demanding we let him into the house immediately.  If he needs to go out, he will come to me and make sure he is heard because my wife would not respond to him as quickly.  He has no patience.