Halldale was recently diagnosed with lumbo-sacral diease which means a problem in the lower back where the spine meets the pelvis.  There is calcification that is creating pressure on the nerves which is causing his shaky legs.  This could be the result of an old pelvis fracture by a car that wasn't taken care of.  Halldale is currently going through 15 sessions of rehabilitation to help him with the pain and slow the progression of this disease.  In spite of all this, Halldale is a very sweet, gentle soul that by looking at him, you wouldn't know he had all these problems; except for his shaky hind legs.  He gets along well with other dogs and is housetrained.