Dogs who are socially isolated or confined for very long periods without supervised exercise need some wall socket for his or her pent-up energy. A puppy who is still left alone all day long will probably take up barking as a spare time activity because nobody will there be to regulate him. Very quickly at all, barking becomes a satisfying habit. Moreover, for most dogs, after they start barking, they have a tendency to continue barking for the sheer fun than it.
Toss a delicacy on his mat and simply tell him to "go to your house." When he is reliably heading to his mat to earn a delicacy, up the ante by starting the entranceway while he is on his mat. If he gets up, close the entranceway immediately. Do it again until he stays on his mat as the door opens. Then raise the difficulty insurance firms someone ring the doorbell while your pet is on his mat. Praise him if he stays on in place.
Dogs are cultural animals. They want friends and companionship. Take your pet to the same dog park and let her make doggy friends. Dogs romping around and playing together tire rapidly and can sleep while dealing with the good, hardy play session.