I got him to the vets, and was asked to put him on the scales, the staff were surprised that he really couldn't stand, and were nice to us as I guess they thought I'd exaggerated on the phone. Anyway, the vet found normal temp, heart, lungs etc fine, but kept him for neuro examination and blood tests. She phoned me a couple of hours later to say that his bloods were normal, neuro stuff all ok, reflexes, sensation etc. Murphy had been given a steroid/painkiller injection, and was now able to stand. Very good news, still no clue why. Brought him home last night, today he has frank blood in his stool, actually, diorhoea. So I'm guessing he was in acute pain yesterday, and just refused to stand, just wanted to curl up in the foecal position. He showed no particular pain on examination. He surprised the vetinary surgery, he looked like a 'gonna', but he managed to disguise his real problem, unfortunately. I'm sure the young vet has learnt to look more laterally in future!!! Anyway, feeding him on mild stuff, promax, and have meloxidyl. My problem is not with your diagnosis, its more with the website, you can't access the answers you give, and you obviously don't receive further communication.