Ok, I need to buy Tink a halter for long walks,as she outgrew her old one... I would like to get a walking aid, she's a wretched puller, and so far nothing I've tried is working to stop her, she's fine undistracted, but anything slightly interesting and she straining like a sled dog,all muscles working...sigh...I just would like a tool to help me train her, since I'm losing all patience....it's been 4 months,and no sign of getting better..... she's 7 pounds,and I hurt my ams on a long walk,plus she's going to hurt herself, she's 1/2 chi, i don't want a trachea problem here... Any recommendations? I'm looking at the gentle leader brand, is the collar better or worse than the halter? I'm leaning towards the halter,is it as effective as the headcollar? I intend to keep trying, but an aid would be so nice while I'm trying!