My 7 year old paint mare has a click in her left shoulder she has had it checked out and nothing is wrong. She doesn't have arthritis or any thing wrong with her bones. I have seen plenty of other horses with a click in their legs or shoulders and none have had any health issues what so ever. I have been told by 3 vets and numerous horse owners that the click in the equivalent to a human cracking their nuckles. People have suggested a joint supplement which couldn't hurt to try. Her shoulder doesn't click ever day and it only clicks when she walks. Recently we had a really big weather changes and that could have something to do with why I heard the click again. But I don't really know what supplement to give her. She is a dressage horse. If that plays into any concerning what type of supplement to give her. Thanks for your help.