Poodle back leg balance issues. Can pinched nerves cause no pain?

It sounds like Shaggy may have intervertebral disc disease--iVDD. This could be described as a pinch nerve, in that the disc material located between the back bones pushes up and "pinches" or compresses the spinal cord. So to specifically answer your question--yes, I think this is a reasonable working diagnosis (meaning treat and note response). Dogs often, especially when they start to feel better, are wanting to play and move around and overall act quite well. If he is still on the medications, contact your vet to clarify what and when you should give the meds-- generally we don't want to give Rimadyl ( a non steroidal anti-inflammatory ) and prednisone ( a steroid) at the same time, as this can pose a significant risk for a stomach ulcer. Also ask your vet based on Shaggy's progress, how much activity he would recommend be allowed.
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