I have a heifer that i am trying to train for showing out of our own herd. she behaves relatively well around me and my grandpa which are around her the most. now when any body else comes around she goes nuts and tries to get away. in face she even broke a side bar on my blocking chute trying to get away from some body a couple of days ago. is there any thing that i can do to stop this or is this animal just one of the unshowable type animals? any information helps.