I interviewed an author who had a book on this subject, I will try to dig it up for you. Essentially, there's nothing that can be done to stop the disease, and it is more common in Shepherds for some reason, probably genetics. But if Carl is handy with tools, maybe you guys could build her a wheelchair/cart to assist her back legs. It is a progressive disease, and a lot of research is being done, but there's no reversing it right now.
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