I would take him in just as soon as you can. Like you're thinking, this could be related to an actual injury. But it also could be neuro - or even abdominal. In dogs, abdominal issues can cause referred pain down the legs. Any bloating, tummy sounds, or digestive issues?
__________________ ~ A friend told me I was delusional. I nearly fell off my unicorn. ~ °¨¨¨°ºOº°¨¨¨° Ann | Pfeiffer | Marcel Verdel Purcell | Wylie | Artie °¨¨¨°ºOº°¨¨¨° |