My Rosie will limp occasionally, especially after she has played and ran for any length of time. Sometimes she has a hard time walking for a few seconds after she wakes up from a nap. It is always her left back leg that seems to be the problem. She has scooted herself across the floor for a bit until she stands up. She doesn't do this all the time. When I took Rosie to the vet, my vet said that Corgi's have very curvy bone structures and it is common for their joints to get out of line, but they will go back into place. She examined her but did not take x-rays. My vet gave me some pain pills to give Rosie when she does this. Rosie is sixteen months old and I would not consider her to be overweight. Should I insist on x-rays?