Both prong and choke chain dog collars are generally made of a metal chain which tightens around a dog’s neck when the handler pulls or jerks back on the leash.
A dog choke chain collar is aimed to control a dog by tightening around your dogs neck. There is no limit of choking to control the tightening around a dog's neck, that makes it possible to cause injuries to the trachea, esophagus, the blood vessels around the eyes, neck sprains, nerve damage, fainting, and temporary paralysis.
Dog prong collars contain metal prongs on the inside that ‘pinch’ a dog’s neck if he pulls on a leash or if a handler jerks a leash to stop a dog to do undesired action. The prongs are smooth, round, ans safe. They made to act in a natural way like a mother dog that teaches her puppies to behave pinching their neck with her fang teeth. Unlike most of dog choke collars, metal dog collars with prongs have a martingale loop that limits its tightening on dog's neck, which reduces the chance for accidental choking and injury.