Hm, so Matlock did turn out to be an IBD dog too. FWIW, Spencer lost a lot of weight on prednisone, which he was only on briefly. He was put on budesonide instead, which targets the gut and thus avoids the broader spectrum of pred side effects. The only SE to budesonide is fur loss, and that did occur. But Spencer is doing wonderfully two years later, so we just use sunscreen in the summer and a coat when he's cold. I'll be happy to tell you more if you want or answer any questions. (He also takes Tylosin and, until recently, metronidazole. He only eats venison, and one-third of that per day is raw.)
Thanks for the update, and Happy Holidays to you too!