First od all SSSid, how dare you tar us all with the same brush, not ALL dog owners are irresponsible and Canary, what the hell is a 'self-styled animal lover' ??
I too, as some on here, feel sorry for dogs that are left to bark all the time because they are obviously ignored, bored and probably neglected. I also would hate to live next door to a dog that barked or howled all day, but if I did, I would definitely have a word with the owners and try to resolve it for both the sake of me and the dog. If this doesn't work, there is always the Council who look into noise complaints or if the dog IS being neglected, the RSPCA.