I am a new member, I don't know if this has been addressed before. My gsd Bogey is two years old, male, weighs 135 pounds (big boy) this summer he has had a couple of problems limping The first time it happened he had chased a chipmunk off of our deckand seemed sore for a short time,then was better. This week he has been limping and I hear a cracking noise sometimes when hegets up after a nap. I feed him Royal Canin for gsds. I am wondering if he should be taking a calcium supplement.I am aware of the hip problems some of these dogs get. His father was hip certified but not his mother.:help: