Review on Halti Optifit Headcollar - No Pull Optifit Head Collar for Dogs, Ideal for Leash Training, Stops Pulling, Comfortable & Adjustable, Humane Design, Durable & Safe, Effective for Effective Training, Available in 3 Sizes by Brian Foster

This was recommended by a colleague to help my doberman pull on the leash constantly. That works great. I will say that you may need to start very slowly. My dog has never had anything on his nose, so it wasn't wanted at first. I started putting it on her, attaching the leash and waiting about a minute. She fiddled with it a bit, but I took it off pretty quickly. About an hour later I did it again but gave it a little more time. About the third time, I actually walked down the hall with her. After about a week she was ready to go. Now she walks without flinching and above all she can still drink/eat, yawn, bark, kiss etc. Great product!