astounding broncos dog collar collars are like flat collars but they tighten when the dog pulls. Even though they tighten, they are generally not used for giving a correction the way a choke chain is. Rather, they are used because they are less likely to slip over the dog's head when adjusted correctly than a flat collar is. These collars should be adjusted so that even at their tightest they cannot accidentally strangle the dog.
The down-side of the head halter is that you often need to train dogs to enjoy wearing them and, while some dogs automatically walk nicely with the head halter, other dogs and their owners require some training. Most owners who start their dogs correctly on one of these astounding broncos dog collar find that the relatively small time investment getting the dogs used to the collar is well worth it. For some dogs that time is only a few seconds to a minute of pairing the head collar with food. For other dogs I recommend a little practice every day for a week so that the owners are sure the dog loves shoving his nose into the halter on his own.