One of our former shelter kitties has developed a problem. The owners took him to the vet, but the x-rays showed nothing out of the ordinary and the vet couldn't find that there is anything wrong with him. He was prescribed some analgesics but they don't seem to do the trick. In the video link bellow you can see how Swifty loses the use of his hind legs. That happens only when he comes back from being let outside and even then not every time. When he is inside only, he walks and runs normally with his other two feline companions. He still runs around like crazy and seem to be fine most of the time, but his situation appears serious. Since vet visits are very stressful for Swifty they asked us if we have encountered anything similar. Since we haven't I am posting this on my blog. If anyone has any suggestions on what may cause this, please, let me know.