sassy had to go to the vet. started limbing couple of days ago after a wrestling session with mom. wasn't getting better. know GSDs have fragile hips so we were concerned when she was really favoring her right hind leg. after a through exam vet said was just sprained muscle...gave her pain/anti inflammatory medicine. we were relieved. has gained nearly 5 lbs in the last 3 months - all muscle. BTW - she still gets as car sick as ever.