dogs are pack animals, Konrad Lorenz calls the relationship between man and dogs the Oldest Covenant.
They adopted us long before civilisation arose and will be with us to the end of civilisation. Dogs wish to be part of a wider group and will communicate this to the world in the only way they know, by barking if they are tied up all day to try to establish recognition. I notice that discovery channel has many many programs about people fighting animal cruelty in UK US South Africa etc.whats the chance for an Arabian based animal rescue programme? Al Jazeera are u listening?
My dogs respond to particular Muezzins by joining in and howling! Not all only some! But generally when a dog barks he is warning the rest of the pack of a potential threat and the others to stay away. He is not qualified to distinguish between innocent and guilty and responds to the owners response to such threats.
I wish dog studies were on the curriculum as people would learn about the best side of human behaviour rather than be terrified of the most useful ally we have had in the whole of human history, I'm including cows sheep etc. here as we could never had domesticated these without the aid of dogs to guard them. Make friends with your neighbours dog, he will respond to you, wish there was a law here to allow people who treat animals like that to be prosecuted!