oh yes , i remember what your reffering to, and your correct. i had forgot that belive it or not..... but she got stuck in an electric fence for 20 seconds or so, and it did wreck her head for a long time, on rabbits. this was 3 year ago now. not long after the incedent, i went to OZ for the winter , when i came back she started working again..
she does NOT pull up though at fences, in the day, but of course lamping is difrent like most lamping dogs will pull up at a hedge or fence.