Yeah -- Derby (the pimp in the picture) has hip dysplasia, but he's been on doggie-glucosomine and it's been working really well for him .. They say he can stay on it until he's 2 or 3 at which point we need to get him hip replacement surgery. It's amazing how dogs cope with things ... He'd rather put himself in pain and jump up on the bed to sleep with us rather than lay on the floor. Either that or it's a personal vendetta to take up the entire bed. Come to think of it, he always do lay whichever way is most uncomfortable for us .............