What is the smallest neck size the PATHFINDER will fit?2018-09-202020-07-07https://dogtrapathfinder.com/wp-content/uploads/2018/07/pathfinder-01-1.pngDogtra Pathfinderhttps://dogtrapathfinder.com/wp-content/uploads/2018/07/pathfinder-01-1.png200px200px