so i ride this horse named miley, shes a 6 year old quarter horse. she's REALLY lazy, and thats why i'm riding her, to make her do work! but lately, she's been acting lame when i ride her, but if you turn her out, she runs around perfectly fine. the owner had the vet and farrier out to make sure nothing was wrong, and they both said she was perfectly fine. the owner and i discussed it, and we were both at a loss, until we thought that maybe she's so smart she's faking it. we think she knows if she limps around, she won't have to do work. can they really be that smart? i have no doubt that she could be that smart, but has anyone else heard anything like this?