Hi, Brontie has taken to pulling like a train whenever she thinks we have turned for home, or back to the car. Am worried she is going to hurt her windpipe / throat. Do any of you use a harness and if so, which kind should I try? We stop every step and say 'don't pull' but even though I think she's starting to understand that, she must still be hurting her neck pulling so much. She's nearly 4 months now. Thanks, Kate PS. Puppy class again last night, chaos with 12 puppies but she came third in the 'leave it / take it' test, lol!