I have been trying unsuccessfully to teach one of my dogs to stop pulling on her leash for about two long years now. I feel like a bit of background might help. She is actually my boyfriend's dog and was raised being allowed to pull to her heart's content until I showed up. Now she will just about drag us wherever she wants to go, and we're no push-overs. I've read and tried every suggestion and how-to I can find; I've tried half a dozen collars, halters, and harnesses. Nothing works, not even stopping and backing up every time she pulls, which is apparently magic for most pullers. She just lunges forward again and barks in frustration when told to sit. She even learned how to brace her head against a Halti and just keep going. Now, I will admit that progress has been made, but a plateau has been reached at arm-not-being-pulled-from-socket. I believe the "problem" lies in Sanzie's motivation. She is not a "typical" dog motivated by pleasing her owners and couldn't care less about food during walks (any other time is a different story). The only thing she wants is to run and refuses to accept anything that tries to slow her down.
Please, does anyone have any ideas what I can do? I am at my wit's end and just want to enjoy going on walks for once.