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Dozzie is a Dachshund? If so this is a classic presentation for back/disc issues. I would strongly recommend calling your vet and having an exam done before any progression of signs.
Usually they can give an injection of Metacam or rimadyl to immediately stop the inflammation and then send home oral medication. You may want to ask for a muscle relaxant as well, like valium, so the back muscles relax and the dog can get some rest.
Let me know if you have further questions.