hi guys I need some advice on my 9 months old foal. he was a rescue baby from the bush. he is having problems with his back legs. It seems similar to stringhalt but instead of muscles its more joint problems. it start off when he is starting to walk and continues on if he is just slow walking while he eats. he lifts his back legs (just like stringhalt) but you can hear and see his stifle joint clicking. when he runs around he has no problems at all. he sometimes drags then lift the leg. he doesnt seem to be in pain at this point but im worried about what he may have. please and thank you to any advice.