Prong collars, such as martingale collars, and herm sprenger 2.25 links can be safer for hard-pulling dogs than flat collars or choke chains, which focus the dog's weight against the trachea. Because the links of a prong collar tighten simultaneously, weight and pressure are distributed equally around the entire neck when wearing one. Prong hermes Sprenger collars teach most dogs to self-correct since pulling causes discomfort. The collar might not be properly adjusted if the dog is not responding.
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