The purpose of dog training collars is rather straightforward—to train hunting dogs for retrieving waterfowl or targets in the field. Dogs have to be taught the skills necessary to be worthwhile hunting companions, otherwise they’ll go off running on their own and ruin your perfect chance. If you want a well-trained, obedient hunting dog, these collars are the tools to use in order to make that happen. There are several different companies who make a good dog training collar—Dogtra, Tri-Tronics and SportDOG come to mind, for example—and it all comes down to which one makes the most sense for you and your dog.