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If someone were looking in my window, I would want my dog to bark. Oh, the DOG is looking out the window - well, that's different. Haha. I think the dog thinks they are intruding on his or her territory.

Yes, I think it is because his breed is also know as the Royal Dog of Madagascar, so anything he surveys is his kingdom!

Yeah, I'm sure it would work with other breeds too. Thanks for posting!