My Papillon is a 3 year old male and he barks at EVERYTHING! Guests coming to the door, other animals outside, other people/animals walking down our street, he looks out the windows in the living room and barks when there’s nothing there! He barks when we come home, when we leave! He barks at the SLIGHTEST little sounds! What can I do to limit him to barking once or twice or not at all when NOT NEEDED? He also jumps on everyone who comes in the door! HELP! Please, no suggestions that would harm or be considered cruel to any animal!