I had this problem in my cockers first season. She was steady at the beginning but slowly started to push it, by the end of the season if you gave her an inch she would take a mile . I have spent all summer working on it and am happy to say this season so far it has not been a problem, she has watched rabbits/hares away so it is fixable but you need to be really consistant (and patient ). First thing I started with was back down to basics, after a while you might notice the dog does in fact know these very well so then move onto a rabbit pen. Some people overuse these and the dog just gets