I have a 8 month old French Bulldog that has been limping for a few weeks now. I took him to the vet and they took x-rays on both sides and could not see anything wrong. He holds up his rear left foot especially in the morning after he wakes up. He does not seem to be in pain and will even run holding it up. The anti-inflammatory that was given to him seemed like it might have helped but then he started limping aging after the finished his course.