Firstly it is important to understand how prong collars work. ‘Prong’ or ‘Pinch’ collars are based on the principle of applying something painful or frightening to stop an undesirable behaviour – very simply, when a dog pulls on the lead, the prongs of the collar close around the neck which can cause pain or discomfort which reduces the chance of the dog pulling on the lead again. Research has shown that aversive training techniques, like prong collars, can cause pain and distress and can compromise dog welfare.
Now while the use of a prong collar can help with a dog that behaves in an undesirable way when on a lead. It must be noted that unless the prong collar stops the dog from pulling and lurching the collar can be incredibly damaging to a dogs neck. In ideal world, the collar would act as a deterrent for the dog and no longer pull. If this isn’t the case and you will need to ensure your dog has the correct obedience training either by yourself or a professional.