My dog is a terrier/beagle mix. She loves to run and pull. She also sniffs like she's tracking when we are outside. She's 6 years old and I've had her for 3 months. She is not used to a leash. She used to run free. When I use a collar on her she pulls and chokes herself. I tried a choke chain but I didn't like it. I use a regular harness, but she pulls like a sled dog. I tried the Gentle Leader harness with the hook in the front. It worked for awhile but then it rubbed under her armpits raw. I don't think it was too tight because when it's looser she can slip one paw out and start pulling. I tried a Halti collar but I did not get to walk her on it because she freaked out so much. My problem is the leash pulling and the initial barking and making sounds when we go out. She leaves the house barking and trying to pull. She is super loud and her voice just echoes. In the A.M. I use the collar because it's harder for her to pull and bark. Any help will be appreciated.