We have a 6 month old pup who is a Lhasa Apso, Toy Poodle, Maltese cross breed. Lately he has taken up barking whenever he hears some sort of noise stimulus. He is mostly set off in the evening when he goes outside. This can be by other dogs barking, people walking down the street and some rather noisy next door neighbours. The neighbors also tend to react to him barking and sometimes this makes him bark even more. They are also not the easiest people to deal with. This week everyone at our house has been sick with the flu and we haven't been up to our usual standard when dealing with him and I think this has exasperated the situation. We don't want to reinforce the barking behaviour but as this mostly happens after the sun goes down we would like to stop it as quickly as we can so as not to disturb everyone. He usually calms once back inside the house or once crated up but once he starts barking it is difficult to get him to listen to commands to come back inside. Sometimes he also barks at the tv but we can remove this stimulus by turning the set off. We can't control outside noise and aren't really sure what to do next. Any constructive ideas would be greatly appreciated.