My dog is a mix of Husky with blue Heeller, once in a while he suffers of stiffness on his hip. What happens is that the muscles on his hips turn too rigid and he can get up, as soon as we noticed this we rush to star giving him massage on all the hip muscles, the episode last only a couple of minutes, my dog stays lucid but I can see in his eyes that he feels the stiffness on his hip, he does not complain during the episode, all he trays to do is to get up or lay down on his side. This is the 4th or 5th time in two years. The first time it happened we rushed him to the vet but by the time we got there the problem was gone and the dog was fine. The vet said it could be a pinch nerve and it would be very hard to diagnosticate because the episode last only a few minutes. Does anyone has an advice?