Havana Annie had some terrifying experiences in her life, many of them involved leashes and being dumped. Since I got her more than a year ago I have tried all kinds of harnesses, but she always manages to slip out. I put your harness on her and she didn't fight it so far. She is so terrified of it, I swear she was holding her breath. She did not move until I finally took it off. I believe she recognizes she has met her match. The goal is to put it on every day, increasing the time until she just ignores it. We have at least 6 weeks of winter left, that should be plenty of time to become desensitized. I am looking forward to taking her on walks with her dog buddy.