I have a 4 month old collie who loves to herd me and her ball when we are on the field!! But she is not vocal when we are out but sometimes barks at home when she sees things out of the window. Have you tried the 'corrector spray' for when she is too vocal?? Worked brilliantly for Cassie's biting on the lead and biting us. I also used it to stop her going upstairs-only needed it x2 and she now sits at the bottom of the stairs waiting for me.