I don't know anything about your trainer or her qualifications, but I can tell you, that my trainer never had a problem, with collar, harness or what ever! She was a "positive reinforcement" trainer and collars were not necessary. Our puppies were expected to walk on a leash without pulling, tugging and biting, but there was no need for it to be collar specific.
So I am not sure why the importance of the collar to her training methods. |