Never ever. No need for them. You own the brain, you own the dog and no strong neck pinchers or choking mechanisms are necessary. Training doesn't require choking or pinching aversives to teach your dog to obey you when positive reinforcement is far easier and fun for everybody and works far better. And if you put one of those horrible collars on a dog with a neck or trachea problem, your dog is probably going to suffer serious complications.
__________________  Jeanie and Tibbe One must do the best one can. You may get some marks for a very imperfect answer: you will certainly get none for leaving the question alone. C. S. Lewis |