Ok, I'm hoping that this is the last update to the incompetent neighbor/neglected dog story. I'm sure all of you are sick of hearing about it (and I'm sick of thinking about it).
I called Housing today and talked to a really nice guy. After telling him the story, he told me that he would contact the soldier's chain of command and the MPs that I originally spoke to. I asked if I could call back in a few days to get an update from him, and he actually encouraged me to do so. Well, I don't really even have to call back. Let me tell you why.
Scout's unit doesn't exist anymore - so he's basically been put with another one until he leaves in September. He hasn't really gotten to know anyone, and doesn't really prefer to. So, when he was in formation today, he was surprised to hear his First Sergeant say something like, "Specialist _____, I just received a call that you've been chaining your dog up outside. Policy letter 21 prohibits it. I don't want to hear about it again. It is too damn hot for any dog to be tied up."
Apparently, she started stuttering something about the dog only going out when her husband was outside with it, but the First Sergeant shut her down pretty quickly (good thing, since she was lying through her freakin' teeth).
Anyway, this girl is in his company and he didn't even know it! And as a bonus, this particular First Sergeant actually likes (and owns) animals. Yay team!
So I can finally say that today I came home from work and the dog wasn't chained up. Whew.
Thanks again for all of your suggestions.