I don't know what this couple does for work. I see his vehicle come and go at the usual 8-5 time frame. I never see her come or go, but I assume she also works, or she hates the dog. I say this because Butters is outside all day. Even on weekends. I don't have an issue with Butters being outside during the day, it's when they come home from the work day that is a problem.
"Poor Butters!" is a phrase Romeo and I say often. He wants to come in when they're home. But for some reason they leave him out until 7pm or so. How do I know this? Because he barks constantly ~ with a howl in there every now and then ~ until they let the poor thing come in. Sure, it annoys us, but mostly we just feel badly for Butters. I think he's lonely. Why have a dog then? Who knows.
Have you ever gone over to a neighbors house to discuss an issue with their dog? I did once. Our neighbors dog jumped over our fence all the time. The woman who answered the door told me to *f* off. I filed a complaint with the city, and they retaliated by building a small cage for the dog right next to our house, so that back fired in a number of ways ~ they never did anything with the dog except when her husband went hunting, and that dog barked constantly too. I don't think you should have a dog that only goes out with you hunting unless you have a couple of dogs so they could at least keep each other company. That cured me, I haven't done a face to face with anyone since then about their dog (or other pet).
So, I've written a letter that I will send anonymously. Basically it says we sure do feel badly for Butters, and could they bring him in earlier so he doesn't bark for 2-3 hours straight? I doubt it will change their behavior, but it's better than doing nothing. I think. Maybe.